T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis, OMS Pod is Moved from HMF to OPF 1

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis, OMS Pod is Moved from HMF to OPF 1

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis Move from OPF-1 to VAB HB

T&R Atlantis, OMS Pod Returns from White Sands, Offloaded at HMF, moved to OPF 1

T&R Atlantis, OMS Pod Returns from White Sands, Offloaded at HMF, moved to OPF 1

T&R Atlantis, OMS Pod Returns from White Sands, Offloaded at HMF, moved to OPF 1

T&R Atlantis, OMS Pod Returns from White Sands, Offloaded at HMF, moved to OPF 1

T&R Atlantis, OMS Pod Returns from White Sands, Offloaded at HMF, moved to OPF 1

T&R Atlantis, OMS Pod Returns from White Sands, Offloaded at HMF, moved to OPF 1

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis casts a wide shadow as it approaches the 525-foot-tall Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida on its move from Orbiter Processing Facility-2. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, United Space Alliance technicians monitor operations as a crane is used to lift a mock air lock being prepared for installation in the payload bay of the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – While wearing a safety harness, United Space Alliance aerospace technician Greg Smith checks equipment during weight and center of gravity checks on the space shuttle Endeavour in Bay 2 of the Orbiter Processing Facility at NASA’s Kennedy Space Center in Florida. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

– CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, a mock air lock has been installed in the payload bay of the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Bay 2 of the Orbiter Processing Facility at NASA's Kennedy Space Center in Florida, a mock air lock, seen in this overhead view, has been installed in the payload bay of the space shuttle Atlantis. The orbiter is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis backs into the transfer aisle of the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida on its move from Orbiter Processing Facility-2 . Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Bay 2 of the Orbiter Processing Facility at NASA's Kennedy Space Center in Florida, an Orbital Maneuvering System engine nozzle has just been installed on the space shuttle Atlantis. The orbiter is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility OPF Bay 2 at NASA’s Kennedy Space Center in Florida, weight and center of gravity checks are underway on the space shuttle Endeavour. Monitoring data on the activity are United Space Alliance USA OPF Manager Mark Barnes, standing to the left, and Mike McClure, of USA Orbiter Handling Engineering. Seated, from the left, are USA move director Cliff Semonski, USA move director Mark McGee, USA lead aerospace Quality Mission Assurance inspector Jesse English, Doug Robison, of USA Orbiter Handling Engineering, and Robert Handl, of Boeing Mass Properties. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. – Looking along the under belly toward the main landing gear of the space shuttle Endeavour, United Space Alliance technicians complete weight and center of gravity checks in Bay 2 of the Orbiter Processing Facility at NASA’s Kennedy Space Center in Florida. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis rolls to a stop in the transfer aisle of the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida, following its move from Orbiter Processing Facility-2. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Workers walk alongside space shuttle Discovery as it is towed to the Vehicle Assembly Building VAB from Orbiter Processing Facility-1 at NASA’s Kennedy Space Center in Florida. The aft view of Discovery reveals the tail cone that covers the three replica shuttle main engines. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis foreground is towed in to Orbiter Processing Facility-1 after being towed from the Vehicle Assembly Building VAB. Workers will continue to prepare Atlantis for display at the Kennedy Space Center Visitor Complex. Meanwhile, space shuttle Discovery is on the move from OPF-1 to the Vehicle Assembly Building VAB. The aft view of Discovery reveals the tail cone that covers the three replica shuttle main engines. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, United Space Alliance technicians prepare a mock air lock for installation in the payload bay of the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, United Space Alliance technicians prepare a mock air lock for installation in the payload bay of the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Bay 2 of the Orbiter Processing Facility at NASA's Kennedy Space Center in Florida, the space shuttle Atlantis' payload bay is being configured for display at the Kennedy Space Center Visitor Complex. Plans call for the orbiter to be transferred to the Visitor Complex in November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, United Space Alliance technicians install a mock air lock in the payload bay of the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Discovery is towed to the Vehicle Assembly Building VAB after being towed out of Orbiter Processing Facility-1. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, a crane is used to lift a mock air lock being prepared for installation in the payload bay of the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Bay 2 of the Orbiter Processing Facility at NASA's Kennedy Space Center in Florida, United Space Alliance technicians install an Orbital Maneuvering System engine nozzle on the space shuttle Atlantis. The orbiter is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Discovery is towed to the Vehicle Assembly Building VAB after being towed out of Orbiter Processing Facility-1. The aft view of Discovery reveals the tail cone that covers the three replica shuttle main engines. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility Bay 2 at NASA’s Kennedy Space Center in Florida, Kennedy Space Center Director Bob Cabana, center, uses a "T"-shaped tool to lock the space shuttle Endeavour's hatch as United Space Alliance technicians Gary Hamilton, left, and Joe Walsh assist. The orbiter is undergoing final preparations for its cross-country ferry flight to California. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility Bay 2 at NASA’s Kennedy Space Center in Florida, Kennedy Space Center Director Bob Cabana, far right, watches as United Space Alliance technicians Gary Hamilton, foreground, and Joe Walsh begin preparations to close the space shuttle Endeavour's hatch. The orbiter is undergoing final preparations for its cross-country ferry flight to California. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. – In Bay 2 of the Orbiter Processing Facility at NASA's Kennedy Space Center in Florida, a mock air lock has been installed in the payload bay of the space shuttle Atlantis. The orbiter is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Preparations are under way in Orbiter Processing Facility-2 to roll space shuttle Atlantis to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Space shuttle workers line up shuttle Atlantis for its move into the transfer aisle of the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis is being moved to the VAB from Orbiter Processing Facility-2. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- The tail fin of space shuttle Atlantis emerges through the open door of Orbiter Processing Facility-2 on its move to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-1 at NASA’s Kennedy Space Center in Florida, a tow vehicle is used to back space shuttle Discovery out of Orbiter Processing Facility-1 for its move to the Vehicle Assembly Building VAB. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Bay 2 of the Orbiter Processing Facility at NASA's Kennedy Space Center in Florida, United Space Alliance technicians remove the two external fuel tank doors from the space shuttle Atlantis. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Protective plastic flanks the nose of space shuttle Atlantis for its move from Orbiter Processing Facility-2 to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Bay 2 of the Orbiter Processing Facility at NASA's Kennedy Space Center in Florida, United Space Alliance technicians remove the two external fuel tank doors from the space shuttle Atlantis. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, a crane is used to lift a mock air lock being prepared for installation in the payload bay of the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-1 at NASA’s Kennedy Space Center in Florida, space shuttle Discovery is being readied for its move to the Vehicle Assembly Building VAB. The aft view of Discovery reveals the tail cone that covers the three replica shuttle main engines. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, a crane is used to lift a mock air lock being prepared for installation in the payload bay of the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Discovery is backed out of Orbiter Processing Facility-1 for its move to the Vehicle Assembly Building VAB. The aft view of Discovery reveals the tail cone that covers the three replica shuttle main engines. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis arrives in the transfer aisle of the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida on its move from Orbiter Processing Facility-2. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility Bay 2 at NASA’s Kennedy Space Center in Florida, Kennedy Space Center Director Bob Cabana, far right, watches as, left to right, United Space Alliance technicians Gary Hamilton, Bobby Wright and Joe Walsh begin closing the space shuttle Endeavour's hatch. The orbiter is undergoing final preparations for its cross-country ferry flight to California. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Discovery in the foreground is on the move from Orbiter Processing Facility-1 OPF-1 to the Vehicle Assembly Building VAB. Meanwhile, space shuttle Atlantis is being towed from the VAB to OPF-1. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Protective plastic flanks the nose of space shuttle Atlantis for its move from Orbiter Processing Facility-2 to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Bay 2 of the Orbiter Processing Facility at NASA's Kennedy Space Center in Florida, United Space Alliance technicians install a television camera in the payload bay of the space shuttle Atlantis. The orbiter is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Endeavour awaits transfer from the Vehicle Assembly Building (VAB), where it is being stored, to Orbiter Processing Facility-2. Transition and retirement processing then will resume on Endeavour for its public display at the California Science Center in Los Angeles. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis basks in the sunshine outside Orbiter Processing Facility-2 on its move to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – While wearing a safety harness, United Space Alliance aerospace technician Greg Smith checks equipment during weight and center of gravity checks on the space shuttle Endeavour in Bay 2 of the Orbiter Processing Facility at NASA’s Kennedy Space Center in Florida. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility Bay 2 at NASA’s Kennedy Space Center in Florida, United Space Alliance aerospace Quality Assurance inspector Dave Bliss, left, and Spherion aerospace technician Scott Palmer complete weight and center of gravity checks on the space shuttle Endeavour. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. -- Slowly, carefully, space shuttle Atlantis backs away from the work platforms in Orbiter Processing Facility-2 on its move to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis is parked in the transfer aisle of the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida, following its move from Orbiter Processing Facility-2. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis is pushed away from the work platforms in Orbiter Processing Facility-2 on its move to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-1 at NASA’s Kennedy Space Center in Florida, space shuttle Discovery is being readied for its move to the Vehicle Assembly Building VAB. The aft view of Discovery reveals the tail cone that covers the three replica shuttle main engines. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, a United Space Alliance technician installs a thermal protection system carrier panel on the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Discovery is towed inside the Vehicle Assembly Building VAB after being towed from Orbiter Processing Facility-1. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Preparations are under way in Orbiter Processing Facility-2 to roll space shuttle Atlantis to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Bay 2 of the Orbiter Processing Facility at NASA's Kennedy Space Center in Florida, United Space Alliance technicians install a television camera in the payload bay of the space shuttle Atlantis. The orbiter is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, a tow vehicle is used to back space shuttle Discovery out of Orbiter Processing Facility-1 for its move to the Vehicle Assembly Building VAB. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, United Space Alliance technicians monitor operations as a crane is used to lift a mock air lock being prepared for installation in the payload bay of the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Bay 2 of the Orbiter Processing Facility at NASA's Kennedy Space Center in Florida, United Space Alliance technicians install an Orbital Maneuvering System engine nozzle on the space shuttle Atlantis. The orbiter is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis backs into the transfer aisle of the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida on its move from Orbiter Processing Facility-2. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. – Looking along the under belly of the space shuttle Endeavour toward its main landing gear, United Space Alliance technicians complete weight and center of gravity checks in Bay 2 of the Orbiter Processing Facility at NASA’s Kennedy Space Center in Florida. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, workers watch as space shuttle Discovery is backed out of Orbiter Processing Facility-1 for its move to the Vehicle Assembly Building VAB. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Discovery in the foreground and space shuttle Atlantis almost meet nose to nose. Discovery was towed out of Orbiter Processing Facility-1 for its move to the Vehicle Assembly Building VAB, while Atlantis was towed out of the VAB for its move to OPF-1. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility Bay 2 at NASA’s Kennedy Space Center in Florida, Kennedy Space Center Director Bob Cabana holds the "T"-shaped tool he used to lock the space shuttle Endeavour's hatch. The orbiter is undergoing final preparations for its cross-country ferry flight to California. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. -- Preparations are under way in Orbiter Processing Facility-2 to move space shuttle Atlantis to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility Bay 2 at NASA’s Kennedy Space Center in Florida, weight and center of gravity checks are being completed on the space shuttle Endeavour. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. -- Preparations are under way to roll space shuttle Atlantis tail first into the transfer aisle of the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida during its move from Orbiter Processing Facility-2. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis backs through the open door of Orbiter Processing Facility-2 on its move to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- The tail fin of space shuttle Atlantis emerges through the open door of Orbiter Processing Facility-2 on its move to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Discovery foreground was backed out of Orbiter Processing Facility-1 OPF-1 for its move to the Vehicle Assembly Building VAB. Meanwhile, space shuttle Atlantis is on the move to OPF-1 after being towed out of the VAB. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Workers walk alongside space shuttle Discovery as it is towed to the Vehicle Assembly Building VAB from Orbiter Processing Facility-1 at NASA’s Kennedy Space Center in Florida. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Discovery, which is being prepared for display at Smithsonian’s National Air and Space Museum, Steven F. Udvar-Hazy Center in Chantilly, Va. Discovery will remain in high bay 4 of the VAB until its scheduled transport atop a NASA Shuttle Carrier Aircraft modified 747 jet to Dulles International Airport in Virginia on April 17. Discovery will then be transported to the Smithsonian on April 19. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, a United Space Alliance technician installs a main engine carrier panel on the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Space shuttle Endeavour (in the background) seems to proclaim "We're behind you, Atlantis" as space shuttle Atlantis rolls into the transfer aisle of the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida, following its move from Orbiter Processing Facility-2. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Workers push space shuttle Atlantis away from the work platforms in Orbiter Processing Facility-2 for its move to the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility Bay 2 at NASA’s Kennedy Space Center in Florida, the space shuttle Endeavour's hatch has been locked and sealed in final preparation for its cross-country ferry flight to California. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility Bay 2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians complete weight and center of gravity checks on the space shuttle Endeavour. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, a mock air lock is prepared for installation in the payload bay of the space shuttle Atlantis in Bay 2 of the Orbiter Processing Facility. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis is repositioned to back into the transfer aisle of the 525-foot-tall Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida during its transfer from Orbiter Processing Facility-2. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility Bay 2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians Gary Hamilton, left, and Joe Walsh close the space shuttle Endeavour's hatch. The orbiter is undergoing final preparations for its cross-country ferry flight to California. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility Bay 2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians monitor an orbiter jack as weight and center of gravity checks are completed on the space shuttle Endeavour. The work is part of Transition and Retirement of the remaining space shuttles, Endeavour and Atlantis. Endeavour is being prepared for public display at the California Science Center in Los Angeles. Its ferry flight to California is targeted for mid-September. Endeavour was the last space shuttle added to NASA’s orbiter fleet. Over the course of its 19-year career, Endeavour spent 299 days in space during 25 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/ Jim Grossmann

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis arrives at the 525-foot-tall Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida on its move from Orbiter Processing Facility-2. Atlantis will be stored temporarily in the VAB while transition and retirement processing resumes on shuttle Endeavour in the processing hangar. Endeavour is being prepared for public display at the California Science Center in Los Angeles. A groundbreaking was held Jan. 18 for Atlantis' future home -- a 65,000-square-foot exhibit in Shuttle Plaza at the Kennedy Space Center Visitor Complex. For additional information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. – In Bay 2 of the Orbiter Processing Facility at NASA's Kennedy Space Center in Florida, United Space Alliance technicians remove the two external fuel tank doors from the space shuttle Atlantis. Atlantis is undergoing final preparations for its transfer to the Kennedy Space Center Visitor Complex targeted for November. The work is part of Transition and Retirement of the remaining space shuttles, Atlantis and Endeavour. Atlantis is being prepared for public display at Kennedy's Visitor Complex. Over the course of its 26-year career, Atlantis spent 293 days in space during 33 missions. For more information, visit http://www.nasa.gov/transition Photo credit: NASA/Jim Grossmann