CAPE CANAVERAL, Fla. -- STS-133 Commander Steve Lindsey prepares to perform touch-and-go landings aboard a Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. An STA is a Gulfstream II business jet that is modified to mimic the shuttle's handling during the final phase of landing. Lindsey and STS-133 Pilot Eric Boe will practice landings as part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- STS-133 Commander Steve Lindsey, right, arrives on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida to perform touch-and-go landings aboard a Shuttle Training Aircraft (STA). An STA is a Gulfstream II business jet that is modified to mimic the shuttle's handling during the final phase of landing. Lindsey and STS-133 Pilot Eric Boe will practice landings as part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- STS-133 Pilot Eric Boe prepares to perform touch-and-go landings aboard a Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. An STA is a Gulfstream II business jet that is modified to mimic the shuttle's handling during the final phase of landing. Boe and STS-133 Commander Steve Lindsey will practice landings as part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- STS-133 Pilot Eric Boe is ready to take off and perform touch-and-go landings aboard a Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. An STA is a Gulfstream II business jet that is modified to mimic the shuttle's handling during the final phase of landing. Boe and STS-133 Commander Steve Lindsey will practice landings as part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- STS-133 Pilot Eric Boe prepares to perform touch-and-go landings aboard a Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. An STA is a Gulfstream II business jet that is modified to mimic the shuttle's handling during the final phase of landing. Boe and STS-133 Commander Steve Lindsey will practice landings as part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- STS-133 Pilot Eric Boe is ready to take off and perform touch-and-go landings aboard a Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. An STA is a Gulfstream II business jet that is modified to mimic the shuttle's handling during the final phase of landing. Boe and STS-133 Commander Steve Lindsey will practice landings as part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- This image was taken from the Shuttle Landing Facility's air traffic control tower at NASA's Kennedy Space Center in Florida and provides a birds-eye view of STS-133 Pilot Eric Boe performing touch-and-go landings aboard one of two Shuttle Training Aircraft (STA). STAs are Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Ben Smegelsky

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CAPE CANAVERAL, Fla. -- This image was taken from the Shuttle Landing Facility's air traffic control tower at NASA's Kennedy Space Center in Florida and provides a birds-eye view of STS-133 Commander Steve Lindsey performing touch-and-go landings aboard one of two Shuttle Training Aircraft (STA). STAs are Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Ben Smegelsky

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CAPE CANAVERAL, Fla. -- This image was taken from the Shuttle Landing Facility's air traffic control tower at NASA's Kennedy Space Center in Florida and provides a birds-eye view of STS-133 Commander Steve Lindsey performing touch-and-go landings aboard one of two Shuttle Training Aircraft (STA). STAs are Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Ben Smegelsky

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CAPE CANAVERAL, Fla. -- This image was taken from the Shuttle Landing Facility's air traffic control tower at NASA's Kennedy Space Center in Florida and provides a birds-eye view of STS-133 Commander Steve Lindsey performing touch-and-go landings aboard one of two Shuttle Training Aircraft (STA). STAs are Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Ben Smegelsky

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CAPE CANAVERAL, Fla. -- STS-133 Commander Steve Lindsey, left, and Pilot Eric Boe arrive on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida to perform touch-and-go landings aboard two Shuttle Training Aircraft (STA). STAs are Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- STS-133 Commander Steve Lindsey, foreground aircraft, and Pilot Eric Boe are ready to take off and perform touch-and-go landings aboard two Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STAs are Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- This image was taken from the Shuttle Landing Facility's air traffic control tower at NASA's Kennedy Space Center in Florida and provides a birds-eye view of STS-133 Pilot Eric Boe performing touch-and-go landings aboard one of two Shuttle Training Aircraft (STA). STAs are Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Ben Smegelsky

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CAPE CANAVERAL, Fla. -- STS-133 Pilot Eric Boe takes a break on the Shuttle Landing Facility runway from performing touch-and-go landings in a Shuttle Training Aircraft (STA) at NASA's Kennedy Space Center in Florida. Boe and STS-133 Commander Steve Lindsey flew two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. These practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. These practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. These practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. These practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

KSC-2011-1533

CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. These practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. These practice landings are part of standard training before space shuttle Discovery's launch to the International Space Station. Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its six-member 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 orbiting outpost. 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. -- STS-133 Commander Steve Lindsey, left, straps in and prepares to fly touch-and-go landings in a Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. At right is Bruce Arnold, an STA instructor pilot. Lindsey and STS-133 Pilot Eric Boe will fly two of the Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CAPE CANAVERAL, Fla. -- STS-133 Commander Steve Lindsey and Pilot Eric Boe, dressed in their orange flight suits, head toward Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STAs are modified Gulfstream II business jets that mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Pilot Eric Boe guides the Shuttle Training Aircraft (STA) in touch-and-go landings over the Shuttle Landing Facility runway. The Gulfstream II business jet is modified to mimic the shuttle's handling during the final phase of landing. Space shuttle Discovery's crew members are at Kennedy for their upcoming launch to the International Space Station. In the days leading up to lift off, they will check the fit of their spacesuits, review launch-day procedures, receive weather briefings and remain medically quarantined to prevent sickness. STS-133 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Pilot Eric Boe is ready to take off from the Shuttle Landing Facility runway to fly touch-and-go landings in a Shuttle Training Aircraft (STA). The Gulfstream II business jet is modified to mimic the shuttle's handling during the final phase of landing. Space shuttle Discovery's crew members are at Kennedy for their upcoming launch to the International Space Station. In the days leading up to lift off, they will check the fit of their spacesuits, review launch-day procedures, receive weather briefings and remain medically quarantined to prevent sickness. STS-133 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Pilot Eric Boe returns from flying touch-and-go landings in a Shuttle Training Aircraft (STA) over the Shuttle Landing Facility runway. The Gulfstream II business jet is modified to mimic the shuttle's handling during the final phase of landing. Space shuttle Discovery's crew members are at Kennedy for their upcoming launch to the International Space Station. In the days leading up to lift off, they will check the fit of their spacesuits, review launch-day procedures, receive weather briefings and remain medically quarantined to prevent sickness. STS-133 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Commander Steve Lindsey is ready to take off from the Shuttle Landing Facility runway to fly touch-and-go landings in a Shuttle Training Aircraft (STA). The Gulfstream II business jet is modified to mimic the shuttle's handling during the final phase of landing. Space shuttle Discovery's crew members are at Kennedy for their upcoming launch to the International Space Station. In the days leading up to lift off, they will check the fit of their spacesuits, review launch-day procedures, receive weather briefings and remain medically quarantined to prevent sickness. STS-133 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Commander Steve Lindsey guides the Shuttle Training Aircraft (STA) in touch-and-go landings over the Shuttle Landing Facility runway. The Gulfstream II business jet is modified to mimic the shuttle's handling during the final phase of landing. Space shuttle Discovery's crew members are at Kennedy for their upcoming launch to the International Space Station. In the days leading up to lift off, they will check the fit of their spacesuits, review launch-day procedures, receive weather briefings and remain medically quarantined to prevent sickness. STS-133 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Commander Steve Lindsey, left, and Pilot Eric Boe return from flying touch-and-go landings in two Shuttle Training Aircraft (STA) over the Shuttle Landing Facility runway. The Gulfstream II business jets are modified to mimic the shuttle's handling during the final phase of landing. Space shuttle Discovery's crew members are at Kennedy for their upcoming launch to the International Space Station. In the days leading up to lift off, they will check the fit of their spacesuits, review launch-day procedures, receive weather briefings and remain medically quarantined to prevent sickness. STS-133 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Commander Steve Lindsey prepares to fly touch-and-go landings in a Shuttle Training Aircraft (STA) over the Shuttle Landing Facility runway. The Gulfstream II business jet is modified to mimic the shuttle's handling during the final phase of landing. Space shuttle Discovery's crew members are at Kennedy for their upcoming launch to the International Space Station. In the days leading up to lift off, they will check the fit of their spacesuits, review launch-day procedures, receive weather briefings and remain medically quarantined to prevent sickness. STS-133 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Commander Steve Lindsey returns from flying touch-and-go landings in a Shuttle Training Aircraft (STA) over the Shuttle Landing Facility runway. The Gulfstream II business jet is modified to mimic the shuttle's handling during the final phase of landing. Space shuttle Discovery's crew members are at Kennedy for their upcoming launch to the International Space Station. In the days leading up to lift off, they will check the fit of their spacesuits, review launch-day procedures, receive weather briefings and remain medically quarantined to prevent sickness. STS-133 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Commander Steve Lindsey is ready to fly touch-and-go landings in a Shuttle Training Aircraft (STA) over the Shuttle Landing Facility runway. The Gulfstream II business jet is modified to mimic the shuttle's handling during the final phase of landing. Space shuttle Discovery's crew members are at Kennedy for their upcoming launch to the International Space Station. In the days leading up to lift off, they will check the fit of their spacesuits, review launch-day procedures, receive weather briefings and remain medically quarantined to prevent sickness. STS-133 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Pilot Eric Boe returns from flying touch-and-go landings in a Shuttle Training Aircraft (STA) over the Shuttle Landing Facility runway. The Gulfstream II business jet is modified to mimic the shuttle's handling during the final phase of landing. Space shuttle Discovery's crew members are at Kennedy for their upcoming launch to the International Space Station. In the days leading up to lift off, they will check the fit of their spacesuits, review launch-day procedures, receive weather briefings and remain medically quarantined to prevent sickness. STS-133 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett

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CAPE CANAVERAL, Fla. -- STS-133 Commander Steve Lindsey straps in and prepares to fly touch-and-go landings in a Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. Lindsey and STS-133 Pilot Eric Boe will fly two of the Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying the modified Gulfstream II business jets to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CAPE CANAVERAL, Fla. -- While performing touch-and-go landings over the Shuttle Landing Facility runway, STS-133 Commander Steve Lindsey and Pilot Eric Boe enjoyed a perfect sunset over NASA's Kennedy Space Center in Florida. Lindsey and Boe flew two Shuttle Training Aircraft (STA), which are Gulfstream II business jets modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Dimitri Gerondidakis

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CAPE CANAVERAL, Fla. -- STS-133 Commander Steve Lindsey and Pilot Eric Boe return their Shuttle Training Aircraft (STA) to the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. They flew the modified Gulfstream II business jets to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings as the sun sets over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Amanda Diller

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) is ready for flight on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe will fly the modified Gulfstream II business jets to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying the modified Gulfstream II business jet to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CAPE CANAVERAL, Fla. -- STS-133 Commander Steve Lindsey returns his Shuttle Training Aircraft (STA) to the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. He and Pilot Eric Boe flew the modified Gulfstream II business jets to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings as the sun sets over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Dimitri Gerondidakis

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CAPE CANAVERAL, Fla. -- Instructor pilot Bruce Arnold, left, STS-133 Commander Steve Lindsey and space reporter John Zarrella exit a Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. Lindsey and Pilot Eric Boe flew two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Amanda Diller

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Dimitri Gerondidakis

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CAPE CANAVERAL, Fla. -- While performing touch-and-go landings over the Shuttle Landing Facility runway, STS-133 Commander Steve Lindsey and Pilot Eric Boe enjoyed a perfect sunset over NASA's Kennedy Space Center in Florida. Lindsey and Boe flew two Shuttle Training Aircraft (STA), which are Gulfstream II business jets modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Dimitri Gerondidakis

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Dimitri Gerondidakis

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CAPE CANAVERAL, Fla. -- While performing touch-and-go landings over the Shuttle Landing Facility runway, STS-133 Commander Steve Lindsey and Pilot Eric Boe enjoyed a perfect sunset over NASA's Kennedy Space Center in Florida. Lindsey and Boe flew two Shuttle Training Aircraft (STA), which are Gulfstream II business jets modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Dimitri Gerondidakis

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings as the sun sets over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Dimitri Gerondidakis

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings as the sun sets over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Dimitri Gerondidakis

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CAPE CANAVERAL, Fla. -- This photo shows the cockpit of A Shuttle Training Aircraft (STA) sitting on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe will fly two of the Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Dimitri Gerondidakis

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CAPE CANAVERAL, Fla. -- While performing touch-and-go landings over the Shuttle Landing Facility runway, STS-133 Commander Steve Lindsey and Pilot Eric Boe enjoyed a perfect sunset over NASA's Kennedy Space Center in Florida. Lindsey and Boe flew two Shuttle Training Aircraft (STA), which are Gulfstream II business jets modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) performs touch-and-go landings as the sun sets over the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Dimitri Gerondidakis

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CAPE CANAVERAL, Fla. -- An aircraft servicer marshals a Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe flew two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Amanda Diller

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) takes off the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe are flying the modified Gulfstream II business jets to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CAPE CANAVERAL, Fla. -- Two Shuttle Training Aircraft (STA) are ready for flight on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe will fly the two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Amanda Diller

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CAPE CANAVERAL, Fla. -- STS-133 Commander Steve Lindsey returns his Shuttle Training Aircraft (STA) to the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. He and Pilot Eric Boe flew the modified Gulfstream II business jets to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Jack Pfaller

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) is ready for flight on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe will fly two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Amanda Diller

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CAPE CANAVERAL, Fla. -- A Shuttle Training Aircraft (STA) is ready for flight on the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida. STS-133 Commander Steve Lindsey and Pilot Eric Boe will fly two Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Practice landings are part of the Terminal Countdown Demonstration Test (TCDT), which provides each shuttle crew and launch team an opportunity to participate in various simulated activities, including equipment familiarization and emergency training at the launch pad. 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/Amanda Diller

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CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, STS-133 Commander Steve Lindsey, left, and Pilot Eric Boe walk toward two Shuttle Training Aircraft (STA) on the Shuttle Landing Facility runway. Dressed in their bright-orange, launch-and-entry suits, the pair will fly touch-and-go landings in Gulfstream II business jets that are modified to mimic the shuttle's handling during the final phase of landing. Space shuttle Discovery's crew members are at Kennedy for their upcoming launch to the International Space Station. In the days leading up to lift off, they will check the fit of their spacesuits, review launch-day procedures, receive weather briefings and remain medically quarantined to prevent sickness. STS-133 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 orbiting outpost. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Kim Shiflett