KENNEDY SPACE CENTER, FLA. -- The STS-113 crew pause for a photo after test drives in the M-113 armored personnel carrier behind them. From left are Mission Specialist Michael Lopez-Alegria, Pilot Paul Lockhart, Commander James Wetherbee and Mission Specialist John Herrington. Driving the M-113 is part of emergency egress training at the pad, one of the Terminal Countdown Demonstration Test activities in preparation for launch. The TCDT also includes a simulated launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. -- STS-113 Mission Specialist John Herrington is at the wheel of an M-113 armored personnel carrier during emergency egress training at the pad. He is accompanied by (left) Mission Specialist Michael Lopez-Alegria and Commander James Wetherbee. The crew is preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10, by taking part in Terminal Countdown Demonstration Test activities. The TCDT includes a simulated launch countdown.. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. -- STS-113 Pilot Paul Lockhart test drives an M-113 armored personnel carrier, part of emergency egress training during Terminal Countdown Demonstration Test activities. He is accompanied by several other crew members, seen at left, Mission Specialist Michael Lopez-Alegria and Commander James Wetherbee. The crew is preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes a simulated launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. -- STS-113 Mission Commander James Wetherbee practices driving an M-113 armored personnel carrier, part of emergency egress training during Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes a launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. -- STS-113 Mission Specialist John Herrington stands inside an M-113 armored personnel carrier that he is about to drive as part of emergency egress training during Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes a simulated launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. - STS-113 Mission Commander James Wetherbee gets ready to drive an M-113 armored personnel carrier, part of emergency egress training during Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes a launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. - STS-113 Mission Specialist Michael Lopez-Alegria is ready to begin a test drive behind the wheel of an M-113 armored personnel carrier during emergency egress training at the pad. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10, by taking part in Terminal Countdown Demonstration Test activities. The TCDT includes a simulated launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. -- STS-113 Pilot Paul Lockhart stands inside an M-113 armored personnel carrier he is about to drive, part of emergency egress training during Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes a simulated launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. -- STS-113 Mission Specialist Donald Pettit relaxes during fit check of his launch and entry suit, part of Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes emergency egress training and a launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. -- STS-113 Mission Specialist John Herrington relaxes during fit check of his launch and entry suit, part of Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes emergency egress training and a launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. -- STS-113 Mission Specialist Donald Pettit smiles during fit check of his helmet, part of Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes emergency egress training and a launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. -- STS-113 Mission Specialist John Herrington relaxes during fit check of his launch and entry suit, part of Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes emergency egress training and a launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. -- Expedition 6 crew member Donald Pettit concentrates on driving an M-113 armored personnel carrier during emergency egress training at the pad. The crew is preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10, by taking part in Terminal Countdown Demonstration Test activities. The TCDT includes a simulated launch countdown.. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- Expedition 6 crew member Nikolai Budarin stands ready for a practice drive in an M-113 armored personnel carrier during emergency egress training at the pad, one of the Terminal Countdown Demonstration Test activities in preparation for launch. The TCDT also includes a simulated launch countdown. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- During emergency egress training at the pad, Expedition 6 crew member Donald Pettit stands inside an M-113 armored personnel carrier before his practice drive. The training is part of Terminal Countdown Demonstration Test activities in preparation for launch. The TCDT also includes a simulated launch countdown. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- The Expedition 6 crew pauses for a photo after emergency egress training at the pad, which included driving the M-113 armored personnel carrier behind them. The crew is preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10, by taking part in Terminal Countdown Demonstration Test activities. The TCDT includes a simulated launch countdown.. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- Expedition 6 crew member Donald Pettit stands ready for a practice drive in an M-113 armored personnel carrier during emergency egress training at the pad, one of the Terminal Countdown Demonstration Test activities in preparation for launch. The TCDT also includes a simulated launch countdown. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- Expedition 6 Commander Ken Bowersox stands ready for a practice drive in an M-113 armored personnel carrier during emergency egress training at the pad, one of the Terminal Countdown Demonstration Test activities in preparation for launch. The TCDT also includes a simulated launch countdown. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- Expedition 6 crew member Nikolai Budarin stands ready for a practice drive in an M-113 armored personnel carrier during emergency egress training at the pad, one of the Terminal Countdown Demonstration Test activities in preparation for launch. The TCDT also includes a simulated launch countdown. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- Expedition 6 crew member Nikolai Budarin takes his turn driving an M-113 armored personnel carrier during emergency egress training at the pad. The crew is preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10, by taking part in Terminal Countdown Demonstration Test activities. The TCDT includes a simulated launch countdown.. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- STS-113 Mission Specialist Michael Lopez-Alegria concentrates on driving an M-113 armored personnel carrier during emergency egress training at the pad. He is accompanied by (far left) Mission Specialist John Herrington and Commander James Wetherbee. Behind Lopez-Alegria is Pilot Paul Lockhart. The crew is preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10, by taking part in Terminal Countdown Demonstration Test activities. The TCDT includes a simulated launch countdown.. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months.

KENNEDY SPACE CENTER, FLA. - Expedition 6 Commander Ken Bowersox adjusts his launch and entry suit during fit check, part of Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes emergency egress training and a launch countdown. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- Expedition 6 Commander Ken Bowersox adjusts his gloves during fit check of his launch and entry suit, part of Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes emergency egress training and a launch countdown. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- Expedition 6 crew member Nikolai Budarin relaxes during fit check of his launch and entry suit, part of Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes emergency egress training and a launch countdown. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- Expedition 6 crew member Nikolai Budarin smiles during fit check of his helmet, part of Terminal Countdown Demonstration Test activities. He and the rest of the crew are preparing for the mission aboard Space Shuttle Endeavour, which is scheduled to launch Nov. 10. The TCDT includes emergency egress training and a launch countdown. The Expedition 6 crew will travel on Space Shuttle Endeavour to the International Space Station to replace Expedition 5, returning to Earth after 4 months. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- The Expedition 6 crew pauses for the photographer after their arrival at the Shuttle Landing Facility. From left are astronaut Donald Pettit, Commander Ken Bowersox and cosmonaut Nikolai Budarin. The crew is at KSC for Terminal Countdown Demonstration Test activities. Expedition 6 will fly on Space Shuttle Endeavour to the International Space Station on mission STS-113. They will relieve and replace the Expedition 5 crew. Endeavour will also be transporting the Port 1 (P1) truss segment to the Station. STS-113 is scheduled to launch Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- STS-113 Mission Specialist Michael Lopez-Alegria arrives at KSC for Terminal Countdown Demonstration Test activities, which include a simulated launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months. The STS-113 launch is scheduled for Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- Astronaut Donald Pettit, a member of the Expedition 6 crew, arrives at KSC for Terminal Countdown Demonstration Test activities. Expedition 6 will fly on Space Shuttle Endeavour to the International Space Station on mission STS-113. They will relieve and replace the Expedition 5 crew. Endeavour will also be transporting the Port 1 (P1) truss segment to the Station. STS-113 is scheduled to launch Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- STS-113 Pilot Paul Lockhart arrives at KSC for Terminal Countdown Demonstration Test activities, which include a simulated launch countdown. The primary payloads on mission STS-113 are the first port truss segment, P1, and the Crew and Equipment Translation Aid (CETA) Cart B. Once delivered, the P1 truss will remain stowed until flight 12A.1 in 2003 when it will be attached to the central truss segment, S0, on the Space Station. Also onboard Space Shuttle Endeavour will be the Expedition 6 crew who will replace Expedition 5, returning to Earth after 4 months. The STS-113 launch is scheduled for Nov. 10, 2002. .

KENNEDY SPACE CENTER, FLA. - As part of Terminal Countdown Demonstration Test (TCDT) activities, the STS-113 and Expedition 6 crews receive training in emergency exit from the orbiter on Launch Pad 39A. Shown are (from left) STS-113 Pilot Paul Lockhart, Mission Specialist John Herrington, Expedition 6 Commander Ken Bowersox, and STS-113 Mission Specialist Michael Lopez-Alegria. The TCDT also includes a simulated launch countdown. The 16th assembly flight to the International Space Station, STS-113 will carry the Port 1 (P1) truss aboard Space Shuttle Endeavour as well as the Expedition 6 crew, who will replace Expedition 5 on the Station. Mission STS-113 is scheduled to launch Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. - As part of Terminal Countdown Demonstration Test (TCDT) activities, the STS-113 and Expedition 6 crews receive training in emergency exit from the orbiter on Launch Pad 39A. Shown are (from left) Mission Commander James Wetherbee and cosmonaut Nikolai Budarin and astronaut Donald Pettit of the Expedition 6 crew. The TCDT also includes a simulated launch countdown. The 16th assembly flight to the International Space Station, STS-113 will carry the Port 1 (P1) truss aboard Space Shuttle Endeavour as well as the Expedition 6 crew, who will replace Expedition 5 on the Station. Mission STS-113 is scheduled to launch Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. - As part of Terminal Countdown Demonstration Test (TCDT) activities, the STS-113 and Expedition 6 crews receive training in emergency exit from the orbiter on Launch Pad 39A. Shown are (from left) Expedition 6 Commander Ken Bowersox; STS-113 Pilot Paul Lockhart; astronaut Donald Pettit; Mission Specialist Michael Lopez-Alegria, Commander James Wetherbee and Mission Specialist John Herrington; and cosmonaut Nikolai Budarin. The TCDT also includes a simulated launch countdown. The 16th assembly flight to the International Space Station, STS-113 will carry the Port 1 (P1) truss aboard Space Shuttle Endeavour as well as the Expedition 6 crew, who will replace Expedition 5 on the Station. Mission STS-113 is scheduled to launch Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- At the entrance to Space Shuttle Endeavour's cockpit, the STS-113 and Expedition 6 crews gather for a photo during Terminal Countdown Demonstration Test activities at the pad. From left, in front, are cosmonaut Nikolai Budarin, Commander Ken Bowersox and astronaut Donald Pettit of Expedition 6, and STS-113 Pilot Paul Lockhart. In back, from left, are STS-113 Mission Specialists John Herrington and Michael Lopez-Alegria and Commander James Wetherbee. The TCDT also includes a simulated launch countdown. The 16th assembly flight to the International Space Station, STS-113 will carry the Port 1 (P1) truss aboard Space Shuttle Endeavour as well as the Expedition 6 crew, who will replace Expedition 5 on the Station. Mission STS-113 is scheduled to launch Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- STS-120 Mission Specialist Doug Wheelock gets ready in the driver's seat for driving practice in the M-113 armored personnel carrier. The M-113 is part of emergency exit procedures from Launch Pad 39A. Behind him, at right, is Pilot George Zamka. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, Fla. -- STS-118 Commander Scott Kelly stands inside an M-113 armored personnel carrier before his driving session as part of emergency exit training. He and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- STS-120 Commander Pamela Melroy is ready for her turn at driving practice in the M-113 armored personnel carrier. The M-113 is part of emergency exit procedures from Launch Pad 39A. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, Fla. -- STS-118 Commander Scott Kelly practices driving an M-113 armored personnel carrier with fellow crew members Tracy Caldwell, Alvin Drew and Dave Williams, all mission specialists, as passengers. They are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, Fla. -- STS-118 Pilot Charlie Hobaugh stands inside an M-113 armored personnel carrier before his driving session as part of emergency exit training. He and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, Fla. -- STS-118 Mission Specialist Alvin Drew stands inside an M-113 armored personnel carrier before his driving session, as part of emergency exit training. He and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, Fla. -- STS-118 Pilot Charlie Hobaugh practices driving an M-113 armored personnel carrier with passenger (at left) Tracy Caldwell, mission specialist. They and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- STS-120 Commander Pamela Melroy poses for another photo after driving practice in the M-113 armored personnel carrier. The M-113 is part of emergency exit procedures from Launch Pad 39A. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- STS-120 Mission Specialist Paolo Nespoli, who represents the European Space Agency, gets ready in the driver's seat for driving practice in the M-113 armored personnel carrier. The M-113 is part of emergency exit procedures from Launch Pad 39A. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. - STS-113 Mission Specialist John Herrington (left) and cosmonaut Nikolai Budarin (center) listen to instructions from a trainer on the emergency egress system on Launch Pad 39A. They are other crew members are taking part in Terminal Countdown Demonstration Test (TCDT) activities, which also include a simulated launch countdown. The 16th assembly flight to the International Space Station, STS-113 will carry the Port 1 (P1) truss aboard Space Shuttle Endeavour as well as the Expedition 6 crew, who will replace Expedition 5 on the Station. Mission STS-113 is scheduled to launch Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- At Launch Complex 39, STS-117 Mission Specialist Steven Swanson is helmeted and ready to practice driving an M-113 armored personnel carrier. The astronauts on the STS-117 crew are participating in M-113 armored personnel carrier training during Terminal Countdown Demonstration Test (TCDT) activities, a dress rehearsal for their launch, targeted for March 15. The M-113 could be used to move the crew away from the launch pad quickly in the event of an emergency. The TCDT also includes pad emergency egress training and a simulated launch countdown. The mission payload aboard Space Shuttle Atlantis is the S3/S4 integrated truss structure, along with a third set of solar arrays and batteries. The crew of six astronauts will install the truss to continue assembly of the station. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At Launch Complex 39, STS-117 Pilot Lee Archambault is helmeted and ready to practice driving an M-113 armored personnel carrier. The astronauts on the STS-117 crew are participating in M-113 armored personnel carrier training during Terminal Countdown Demonstration Test (TCDT) activities, a dress rehearsal for their launch, targeted for March 15. The M-113 could be used to move the crew away from the launch pad quickly in the event of an emergency. The TCDT also includes pad emergency egress training and a simulated launch countdown. The mission payload aboard Space Shuttle Atlantis is the S3/S4 integrated truss structure, along with a third set of solar arrays and batteries. The crew of six astronauts will install the truss to continue assembly of the station. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At Launch Complex 39, members of the STS-117 crew are instructed in the operation of an M-113 armored personnel carrier by astronaut rescue team leader Capt. George Hoggard (left). The astronauts on the STS-117 crew are participating in M-113 armored personnel carrier training during Terminal Countdown Demonstration Test (TCDT) activities, a dress rehearsal for their launch, targeted for March 15. The M-113 could be used to move the crew away from the launch pad quickly in the event of an emergency. The TCDT also includes pad emergency egress training and a simulated launch countdown. The mission payload aboard Space Shuttle Atlantis is the S3/S4 integrated truss structure, along with a third set of solar arrays and batteries. The crew of six astronauts will install the truss to continue assembly of the station. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At Launch Complex 39, STS-117 Mission Specialist James Reilly is helmeted and ready to practice driving an M-113 armored personnel carrier. The astronauts on the STS-117 crew are participating in M-113 armored personnel carrier training during Terminal Countdown Demonstration Test (TCDT) activities, a dress rehearsal for their launch, targeted for March 15. The M-113 could be used to move the crew away from the launch pad quickly in the event of an emergency. The TCDT also includes pad emergency egress training and a simulated launch countdown. The mission payload aboard Space Shuttle Atlantis is the S3/S4 integrated truss structure, along with a third set of solar arrays and batteries. The crew of six astronauts will install the truss to continue assembly of the station. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At Launch Complex 39, STS-117 Mission Specialist Patrick Forrester is helmeted and ready to practice driving an M-113 armored personnel carrier. The astronauts on the STS-117 crew are participating in M-113 armored personnel carrier training during Terminal Countdown Demonstration Test (TCDT) activities, a dress rehearsal for their launch, targeted for March 15. The M-113 could be used to move the crew away from the launch pad quickly in the event of an emergency. The TCDT also includes pad emergency egress training and a simulated launch countdown. The mission payload aboard Space Shuttle Atlantis is the S3/S4 integrated truss structure, along with a third set of solar arrays and batteries. The crew of six astronauts will install the truss to continue assembly of the station. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At Launch Complex 39, STS-117 Mission Specialist Danny Olivas is helmeted and ready to practice driving an M-113 armored personnel carrier. The astronauts on the STS-117 crew are participating in M-113 armored personnel carrier training during Terminal Countdown Demonstration Test (TCDT) activities, a dress rehearsal for their launch, targeted for March 15. The M-113 could be used to move the crew away from the launch pad quickly in the event of an emergency. The TCDT also includes pad emergency egress training and a simulated launch countdown. The mission payload aboard Space Shuttle Atlantis is the S3/S4 integrated truss structure, along with a third set of solar arrays and batteries. The crew of six astronauts will install the truss to continue assembly of the station. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At Launch Complex 39, STS-117 Commander Rick Sturckow signals that he is ready to practice driving an M-113 armored personnel carrier. The astronauts on the STS-117 crew are participating in M-113 armored personnel carrier training during Terminal Countdown Demonstration Test (TCDT) activities, a dress rehearsal for their launch, targeted for March 15. The M-113 could be used to move the crew away from the launch pad quickly in the event of an emergency. The TCDT also includes pad emergency egress training and a simulated launch countdown. The mission payload aboard Space Shuttle Atlantis is the S3/S4 integrated truss structure, along with a third set of solar arrays and batteries. The crew of six astronauts will install the truss to continue assembly of the station. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At Launch Complex 39, members of the STS-117 crew are instructed in the operation of an M-113 armored personnel carrier by the astronaut rescue team. The astronauts on the STS-117 crew are participating in M-113 armored personnel carrier training during Terminal Countdown Demonstration Test (TCDT) activities, a dress rehearsal for their launch, targeted for March 15. The M-113 could be used to move the crew away from the launch pad quickly in the event of an emergency. The TCDT also includes pad emergency egress training and a simulated launch countdown. The mission payload aboard Space Shuttle Atlantis is the S3/S4 integrated truss structure, along with a third set of solar arrays and batteries. The crew of six astronauts will install the truss to continue assembly of the station. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At Launch Complex 39, STS-117 Mission Specialist Patrick Forrester (right) waits his turn to practice driving an M-113 armored personnel carrier as fellow crew members look on. The astronauts on the STS-117 crew are participating in M-113 armored personnel carrier training during Terminal Countdown Demonstration Test (TCDT) activities, a dress rehearsal for their launch, targeted for March 15. The M-113 could be used to move the crew away from the launch pad quickly in the event of an emergency. The TCDT also includes pad emergency egress training and a simulated launch countdown. The mission payload aboard Space Shuttle Atlantis is the S3/S4 integrated truss structure, along with a third set of solar arrays and batteries. The crew of six astronauts will install the truss to continue assembly of the station. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. - The STS-113 and Expedition 6 crews pause for a photo during Terminal Countdown Demonstration Test activities at the pad. From left are STS-113 Mission Specialists Michael Lopez-Alegria and John Herrington, Commander James Wetherbee and Pilot Paul Lockhart; Expedition 6 astronaut Donald Pettit, Commander Ken Bowersox and cosmonaut Nikolai Budarin. The TCDT also includes a simulated launch countdown. The 16th assembly flight to the International Space Station, STS-113 will carry the Port 1 (P1) truss aboard Space Shuttle Endeavour as well as the Expedition 6 crew, who will replace Expedition 5 on the Station. Mission STS-113 is scheduled to launch Nov. 10, 2002.

KENNEDY SPACE CENTER, FLA. -- STS-120 Pamela Melroy (front) is ready for training on the M-113 armored personnel carrier, part of emergency egress training. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – STS-127 Mission Specialist Dave Wolf takes the wheel of the M-113 armored personnel carrier. Driving the M-113 is part of the training on emergency egress procedures. The crew members of space shuttle Endeavour's STS-127 mission are taking turns driving the M-113. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a launch dress rehearsal called the terminal countdown demonstration test, or TCDT, which includes the emergency egress training and equipment familiarization. The STS-127 mission is the final of three flights dedicated to the assembly of the Japanese Kibo laboratory complex. Endeavour's launch is targeted for June 13. Photo credit: NASA/Kim Shiflett

STS-89 Commander Terrence Wilcutt gets ready to train in an M-113 armored personnel carrier as part of Terminal Countdown Demonstration Test (TCDT) activities. The TCDT is held at KSC prior to each Space Shuttle flight to provide crews with an opportunity to participate in simulated countdown activities. Standing inside the M-113 vehicle is Wilcutt while George Hoggard, a training officer with KSC Fire Services, sits atop the armored personnel carrier. The STS-89 mission will be the eighth docking of the Space Shuttle with the Russian Space Station Mir. After docking, STS-89 Mission Specialist Andrew Thomas, Ph.D., will transfer to the space station, succeeding David Wolf, M.D., who will return to Earth aboard Endeavour. Dr. Thomas will live and work on Mir until June. STS-89 is scheduled for a Jan. 22 liftoff at 9:48 p.m

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Pilot Eric Boe prepares to practice driving an M-113 armored personnel carrier. Behind him is Commander Steve Lindsey. An M-113 is kept at the foot of the launch pad in case an emergency egress from the vicinity of the pad is needed, and training on the vehicle is part of the Terminal Countdown Demonstration Test (TCDT). TCDT provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and a launch countdown. Space shuttle Discovery and its STS-133 crew will deliver the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the International Space Station. Launch is targeted for Nov. 1 at 4:40 p.m. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Mission Commander Steve Lindsey points out his crew's mission patch on an M-113 armored personnel carrier. An M-113 is kept at the foot of the launch pad in case an emergency egress from the vicinity of the pad is needed, and driving the vehicle is part of the Terminal Countdown Demonstration Test (TCDT). TCDT provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and a launch countdown. Space shuttle Discovery and its STS-133 crew will deliver the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the International Space Station. Launch is targeted for Nov. 1 at 4:40 p.m. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, the STS-133 crew shares a light moment with Battalion Chief David Seymour, left, during training on the M-113 armored personnel carrier. An M-113 is kept at the foot of the launch pad in case an emergency egress from the vicinity of the pad is needed, and driving the vehicle is part of the Terminal Countdown Demonstration Test (TCDT). TCDT provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and a launch countdown. Space shuttle Discovery and its STS-133 crew will deliver the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the International Space Station. Launch is targeted for Nov. 1 at 4:40 p.m. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

STS-89 Mission Specialist Andrew Thomas, Ph.D. gets ready to drive an M-113 armored personnel carrier as part of Terminal Countdown Demonstration Test (TCDT) activities. The TCDT is held at KSC prior to each Space Shuttle flight to provide crews with an opportunity to participate in simulated countdown activities. Standing inside the M-113 is Dr. Thomas while George Hoggard, a training officer with KSC Fire Services, sits atop the vehicle. The STS-89 mission will be the eighth docking of the Space Shuttle with the Russian Space Station Mir. After docking, Dr. Thomas will transfer to the space station, succeeding David Wolf, M.D., who will return to Earth aboard Endeavour. Dr. Thomas will live and work on Mir until June. STS-89 is scheduled for a Jan. 22 liftoff at 9:48 p.m

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Commander Steve Lindsey prepares to drive the M-113 armored personnel carrier. An M-113 is kept at the foot of the launch pad in case an emergency egress from the vicinity of the pad is needed, and training on the vehicle is part of the Terminal Countdown Demonstration Test (TCDT). TCDT provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and a launch countdown. Space shuttle Discovery and its STS-133 crew will deliver the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the International Space Station. Launch is targeted for Nov. 1 at 4:40 p.m. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- STS-120 Mission Specialist Daniel Tani is ready for his turn at driving the M-113 armored personnel carrier. The M-113 is part of emergency exit procedures from Launch Pad 39A. Behind him, at right, is Mission Specialist Paolo Nespoli, who represents the European Space Agency. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- STS-120 crew members signal their pleasure in participating in M-113 driving practice, part of emergency exit procedures from Launch Pad 39A. Seen here on the M-113 are Mission Specialists Scott Parazynski, Stephanie Wilson, Daniel Tani, Paolo Nespoli and Doug Wheelock. Nespoli represents the European Space Agency. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- STS-120 Pilot George Zamka practices driving the M-113 armored personnel carrier, part of emergency exit procedures from Launch Pad 39A. Alongside is the trainer. In the rear of the M-113 are Mission Specialists Daniel Tani, Commander Pamela Melroy and Mission Specialists Stephanie Wilson, Paolo Nespoli and Doug Wheelock. Nespoli represents the European Space Agency. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- After driving practice on the M-113 armored personnel carrier, the STS-120 crew pauses for a group photo. From left are Mission Specialists Scott Parazynski, Daniel Tani and Doug Wheelock, Commander Pamela Melroy, Mission Specialist Stephanie Wilson, Pilot George Zamka and Mission Specialist Paolo Nespoli, who represents the European Space Agency. The M-113 is part of emergency exit procedures from Launch Pad 39A. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- STS-120 Mission Specialist Stephanie Wilson is ready for her turn at driving the M-113 armored personnel carrier. The M-113 is part of emergency exit procedures from Launch Pad 39A. Behind her are Mission Specialists Doug Wheelock, at left) and Paolo Nespoli, who represents the European Space Agency. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, Fla. -- STS-118 Mission Specialist Barbara R. Morgan practices driving an M-113 armored personnel carrier as part of emergency exit training. Seen in the back, at left, are Commander Scott Kelly and Mission Specialists Tracy Caldwell and Alvin Drew. Morgan joined NASA's Teacher in Space program in 1985 and was selected as an astronaut in 1998. She and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- STS-120 Mission Specialist Scott Parazynski is ready for his turn at driving the M-113 armored personnel carrier. The M-113 is part of emergency exit procedures from Launch Pad 39A. Behind Parazynski is Mission Specialist Paolo Nespoli, who represents the European Space Agency. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

With other crew members in the back, STS-92 Mission Specialist Leroy Chiao races the M-113 along the track through the scrub. Driving the M-113 is part of emergency egress training during Terminal Countdown Demonstration Test (TCDT) activities. The tracked vehicle could be used by the crew in the event of an emergency at the pad during which the crew must make a quick exit from the area. The TCDT also provides simulated countdown exercises and opportunities to inspect the mission payloads in the orbiter’s payload bay. STS-92 is scheduled to launch Oct. 5 at 9:30 p.m. EDT on the fifth flight to the International Space Station. It will carry two elements of the Space Station, the Integrated Truss Structure Z1 and the third Pressurized Mating Adapter. The mission is also the 100th flight in the Shuttle program

KENNEDY SPACE CENTER, Fla. -- STS-118 Mission Specialist Alvin Drew practices driving an M-113 armored personnel carrier, with (at right) Mission Specialists Barbara R. Morgan and Dave Williams as passengers. Morgan joined NASA's Teacher in Space program in 1985 and was selected as an astronaut in 1998. Williams represents the Canadian Space Agency. They and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, Fla. -- STS-118 Mission Specialist Tracy Caldwell is ready to take her turn at driving an M-113 armored personnel carrier as part of emergency exit training. Seen behind her at right is Mission Specialist Dave Williams, who represents the Canadian Space Agency. They and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- STS-120 Pilot George Zamka gets ready in the driver's seat for driving practice in the M-113 armored personnel carrier. The M-113 is part of emergency exit procedures from Launch Pad 39A. Behind Zamka, half hidden, is Mission Specialist Paolo Nespoli, who represents the European Space Agency. The training is part of terminal countdown demonstration test, or TCDT, activities the crew is undertaking at NASA's Kennedy Space Center. The TCDT also includes equipment familiarization and a simulated launch countdown. Mission STS-120, which will carry the Italian-built U.S. Node 2 to the International Space Station, is targeted for launch on Oct. 23. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, Fla. -- STS-118 Mission Specialist Rick Mastracchio practices driving an M-113 armored personnel carrier as part of emergency exit training. The astronauts seen behind him are Mission Specialists Alvin Drew, Barbara R. Morgan, Dave Williams (standing) and Tracy Caldwell. Morgan joined NASA's Teacher in Space program in 1985 and was selected as an astronaut in 1998. Williams represents the Canadian Space Agency. The crew is at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, Fla. -- STS-118 Mission Specialist Tracy Caldwell practices driving an M-113 armored personnel carrier as part of emergency exit training. Seen in the back are Mission Specialist Alvin Drew, Pilot Charlie Hobaugh and educator astronaut and Mission Specialist Barbara R. Morgan. They and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, Fla. -- STS-118 Mission Specialist Dave Williams, who represents the Canadian Space Agency, signals success after driving an M-113 armored personnel carrier as part of emergency exit training. Behind him are, at left, Pilot Charlie Hobaugh and, right, Mission Specialist Tracy Caldwell. They and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, Fla. -- STS-118 Mission Specialist Rick Mastracchio gets ready to practice driving an M-113 armored personnel carrier as part of emergency exit training. Behind him, at right, is Mission Specialist Tracy Caldwell. They and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, Fla. -- STS-118 Mission Specialist Barbara R. Morgan is ready to practice driving an M-113 armored personnel carrier as part of emergency exit training. Behind her at the rear are Mission Specialists (left) Tracy Caldwell and Dave Williams. Morgan joined NASA's Teacher in Space program in 1985 and was selected as an astronaut in 1998. She and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, Fla. -- STS-118 Commander Scott Kelly practices driving an M-113 armored personnel carrier, as part of emergency exit training, with fellow crew members aboard. Behind Kelly is Mission Specialist Barbara R. Morgan. The crew is at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, Fla. -- STS-118 Mission Specialist Dave Williams, who represents the Canadian Space Agency, gets ready to practice driving an M-113 armored personnel carrier as part of emergency exit training. Behind him is Mission Specialist Barbara R. Morgan. They and other crew members are at Kennedy for the Terminal Countdown Demonstration Test (TCDT), a dress rehearsal for launch. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- STS-116 Commander Mark Polansky is ready for his turn at driving the M-113 armored personnel carrier. The mission crew is at KSC for terminal countdown demonstration test (TCDT) activities that are preparation for launch. The M-113 could be used to move the crew quickly away from the launch pad in the event of an emergency. Behind Polansky is Mission Specialist Robert Curbeam. The STS-116 mission is No. 20 to the International Space Station and construction flight 12A.1. The mission payload is the SPACEHAB module, the P5 integrated truss structure and other key components. Launch is scheduled for no earlier than Dec. 7. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- STS-116 Mission Specialist Joan Higginbotham is helmeted and ready to practice driving the M-113 armored personnel carrier. The mission crew is at KSC for terminal countdown demonstration test (TCDT) activities that are preparation for launch. The M-113 could be used to move the crew quickly away from the launch pad in the event of an emergency. In the background is Mission Specialist Nicholas Patrick. The STS-116 mission is No. 20 to the International Space Station and construction flight 12A.1. The mission payload is the SPACEHAB module, the P5 integrated truss structure and other key components. Launch is scheduled for no earlier than Dec. 7. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, STS-128 Pilot Kevin Ford has completed his turn at driving an M-113 armored personnel carrier. The crew members of space shuttle Discovery's STS-128 mission are taking turns driving the M-113, which will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at Kennedy for a launch dress rehearsal called the terminal countdown demonstration test, or TCDT, which includes emergency exit training and equipment familiarization, as well as a simulated launch countdown. Launch of Discovery is targeted for late August. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – STS-127 Pilot Doug Hurley smiles after practicing driving the M-113 armored personnel carrier. The crew members of space shuttle Endeavour's STS-127 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a launch dress rehearsal called the terminal countdown demonstration test, or TCDT, which includes the emergency egress training and equipment familiarization. The STS-127 mission is the final of three flights dedicated to the assembly of the Japanese Kibo laboratory complex. Endeavour's launch is targeted for June 13. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – STS-127 Commander Mark Polansky smiles after practicing driving the M-113 armored personnel carrier. The crew members of space shuttle Endeavour's STS-127 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a launch dress rehearsal called the terminal countdown demonstration test, or TCDT, which includes the emergency egress training and equipment familiarization. The STS-127 mission is the final of three flights dedicated to the assembly of the Japanese Kibo laboratory complex. Endeavour's launch is targeted for June 13. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. - On Launch Pad 39A, a trainer (right) explains use of the slidewire basket, part of the emergency egress system, to Expedition 6 astronaut Donald Pettit (left) and STS-113 Mission Specialists Michael Lopez-Alegria (center) and John Herrington (right). . They are other crew members are taking part in Terminal Countdown Demonstration Test (TCDT) activities, which also include a simulated launch countdown. The 16th assembly flight to the International Space Station, STS-113 will carry the Port 1 (P1) truss aboard Space Shuttle Endeavour as well as the Expedition 6 crew, who will replace Expedition 5 on the Station. Mission STS-113 is scheduled to launch Nov. 10, 2002.

CAPE CANAVERAL, Fla. – STS-127 Mission Specialist Tom Marshburn takes his turn driving the M-113 armored personnel carrier, which is part of the training on emergency egress procedures. The crew members of space shuttle Endeavour's STS-127 mission are taking turns driving the M-113. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a launch dress rehearsal called the terminal countdown demonstration test, or TCDT, which includes the emergency egress training and equipment familiarization. The STS-127 mission is the final of three flights dedicated to the assembly of the Japanese Kibo laboratory complex. Endeavour's launch is targeted for June 13. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - The STS-125 crew members listen to instructions for driving the M-113 armored personnel carrier. From left are Mission Specialists John Grunsfeld, Megan McArthur, Michael Good, Mike Massimino and Gregory C. Johnson. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - STS-125 Commander Scott Altman is ready to practice driving the M-113 armored personnel carrier. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - The STS-125 crew members listen to instructions for driving the M-113 armored personnel carrier. From left are Mission Specialists Megan McArthur, Mike Massimino and Michael Good. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - STS-125 Mission Specialist Megan McArthur practices driving the M-113 armored personnel carrier. Other crew members are behind her. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - STS-125 Pilot Gregory C. Johnson practices driving the M-113 armored personnel carrier. Behind him are other crew members. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - STS-125 Mission Specialist John Grunsfeld is ready to practice driving the M-113 armored personnel carrier. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - STS-125 Pilot Gregory C. Johnson is ready to practice driving the M-113 armored personnel carrier. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - An STS-125 crew member affixes a mission patch to the inside of the M-113 armored personnel carrier the crew practiced driving.The crew members of space shuttle Atlantis' STS-125 mission each practiced driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – STS-127 Mission Specialist Tim Kopra is happy to have successfully driven the M-113 armored personnel carrier, which is part of the training on emergency egress procedures. The crew members of space shuttle Endeavour's STS-127 mission are taking turns driving the M-113. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a launch dress rehearsal called the terminal countdown demonstration test, or TCDT, which includes the emergency egress training and equipment familiarization. The STS-127 mission is the final of three flights dedicated to the assembly of the Japanese Kibo laboratory complex. Endeavour's launch is targeted for June 13. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - STS-125 Mission Specialist Mike Massimino is ready to practice driving the M-113 armored personnel carrier. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - STS-125 Mission Specialist Michael Good practices driving the M-113 armored personnel carrier. Other crew members are behind him. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - STS-125 Mission Specialist Andrew Feustel is ready to practice driving the M=113 armored personnel carrier. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - STS-125 Mission Specialist Mike Massimino practices driving the M-113 armored personnel carrier. Behind him are other crew members. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. - STS-125 Mission Specialist Michael Good is ready to practice driving the M-113 armored personnel carrier. The crew members of space shuttle Atlantis' STS-125 mission will each practice driving the M-113 in turn as part of their training on emergency egress procedures. An M-113 will be available to transport the crew to safety in the event of a contingency on the pad before their launch. The crew is at NASA's Kennedy Space Center for a dress launch rehearsal called the terminal countdown demonstration test, or TCDT. It provides astronauts and ground crews with an opportunity to participate in various simulated countdown activities, including equipment familiarization, emergency training and a simulated launch countdown. The STS-125 mission aboard space shuttle Atlantis to service NASA’s Hubble Space Telescope is targeted to launch Oct. 10. Photo credit: NASA/Kim Shiflett