CAPE CANAVERAL, Fla. -- Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians inspect the top emergency escape window that was removed from space shuttle Atlantis. The window is being removed in order to gain access to remove hazardous pyrotechnics from the shuttle. The window will be shipped to Johnson Space Center in Houston for inspections and a replacement outer pane will be installed in its place. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex in Florida. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians assist as a large crane lowers space shuttle Atlantis’ remote manipulator system (RMS) robotic arm onto a special carrier platform. The RMS will be transported to NASA’s Johnson Space Center in Houston for possible use on future spaceflights. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is being prepared for removal of the top emergency escape window. The window is being removed in order to gain access to remove hazardous pyrotechnics from the shuttle. The window will be shipped to Johnson Space Center in Houston for inspections and a replacement outer pane will be installed in its place. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex in Florida. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians attach a large crane to the remote manipulator system (RMS) robotic arm in space shuttle Atlantis’ payload bay to prepare it for removal. The RMS will be transported to NASA’s Johnson Space Center in Houston for possible use on future spaceflights. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians attach a large crane to the remote manipulator system (RMS) robotic arm in space shuttle Atlantis’ payload bay to prepare it for removal. The RMS will be transported to NASA’s Johnson Space Center in Houston for possible use on future spaceflights. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a large crane lifts the remote manipulator system (RMS) robotic arm away from space shuttle Atlantis’ payload bay. The RMS will be transported to NASA’s Johnson Space Center in Houston for possible use on future spaceflights. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians inspect the top emergency escape window that was removed from space shuttle Atlantis. The window is being removed in order to gain access to remove hazardous pyrotechnics from the shuttle. The window will be shipped to Johnson Space Center in Houston for inspections and a replacement outer pane will be installed in its place. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex in Florida. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians remove the top emergency escape window from space shuttle Atlantis. The window is being removed in order to gain access to remove hazardous pyrotechnics from the shuttle. The window will be shipped to Johnson Space Center in Houston for inspections and a replacement outer pane will be installed in its place. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex in Florida. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians assist as a large crane lowers space shuttle Atlantis’ remote manipulator system (RMS) robotic arm onto a special carrier platform. The RMS will be transported to NASA’s Johnson Space Center in Houston for possible use on future spaceflights. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians remove the top emergency escape window from space shuttle Atlantis. The window is being removed in order to gain access to remove hazardous pyrotechnics from the shuttle. The window will be shipped to Johnson Space Center in Houston for inspections and a replacement outer pane will be installed in its place. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex in Florida. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians prepare space shuttle Atlantis for removal of the top emergency escape window. The window is being removed in order to gain access to remove hazardous pyrotechnics from the shuttle. The window will be shipped to Johnson Space Center in Houston for inspections and a replacement outer pane will be installed in its place. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex in Florida. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians monitor the progress as a large crane carries the remote manipulator system (RMS) robotic arm that was removed from space shuttle Atlantis’ payload bay. The RMS will be transported to NASA’s Johnson Space Center in Houston for possible use on future spaceflights. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians inspect the top emergency escape window that was removed from space shuttle Atlantis. The window is being removed in order to gain access to remove hazardous pyrotechnics from the shuttle. The window will be shipped to Johnson Space Center in Houston for inspections and a replacement outer pane will be installed in its place. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex in Florida. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians monitor the progress as a large crane lifts the remote manipulator system (RMS) robotic arm high above space shuttle Atlantis’ payload bay. The RMS will be transported to NASA’s Johnson Space Center in Houston for possible use on future spaceflights. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians remove the top emergency escape window from space shuttle Atlantis. The window is being removed in order to gain access to remove hazardous pyrotechnics from the shuttle. The window will be shipped to Johnson Space Center in Houston for inspections and a replacement outer pane will be installed in its place. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The shuttle is being prepared for display at the Kennedy Space Center Visitor Complex in Florida. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is being towed from the Vehicle Assembly Building over to Orbiter Processing Facility-1. Atlantis’ forward reaction control system, orbiter maneuvering system pods and three space shuttle main engines have been removed. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is towed from the Vehicle Assembly Building toward Orbiter Processing Facility-1 OPF-1. In the background, space shuttle Discovery faces Atlantis after it was completely towed out from OPF-1. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is towed out of the Vehicle Assembly Building and over to Orbiter Processing Facility-1. Atlantis’ forward reaction control system, orbiter maneuvering system pods and three space shuttle main engines have been removed. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is being towed on its way from the Vehicle Assembly Building to Orbiter Processing Facility-1 OPF-1. A view of Atlantis’ nose cone area shows that the forward reaction control system has been removed. In the background is space shuttle Discovery after it was towed out of OPF-1. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, workers walk alongside as space shuttle Atlantis is towed out of the Vehicle Assembly Building and over to Orbiter Processing Facility-1. Atlantis’ forward reaction control system, orbiter maneuvering system pods and three space shuttle main engines have been removed. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is towed toward Orbiter Processing Facility-1 OPF-1 after being towed from the Vehicle Assembly Building VAB. At left, space shuttle Discovery is being towed to the VAB after being towed out of OPF-1. The tail cone protects Discovery’s three replica shuttle main engines. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a view from above shows space shuttle Atlantis as it waits to be towed out of the transfer aisle and over to Orbiter Processing Facility-1. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is towed from the Vehicle Assembly Building toward Orbiter Processing Facility-1 OPF-1. In the background, space shuttle Discovery faces Atlantis after it was completely towed out from OPF-1. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is being towed from the Vehicle Assembly Building over to Orbiter Processing Facility-1. Atlantis’ forward reaction control system, orbiter maneuvering system pods and three space shuttle main engines have been removed. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis has been towed to the doors of Orbiter Processing Facility-1 after being towed from the Vehicle Assembly Building. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, technicians prepare space shuttle Atlantis to be towed out of the transfer aisle and over to Orbiter Processing Facility-1. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is towed toward Orbiter Processing Facility-1 after being towed from the Vehicle Assembly Building. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is towed toward Orbiter Processing Facility-1 OPF-1 after being towed from the Vehicle Assembly Building VAB. At left, space shuttle Discovery is being towed to the VAB after being towed out of OPF-1. The tail cone protects Discovery’s three replica shuttle main engines. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is towed toward Orbiter Processing Facility-1 OPF-1 after being towed from the Vehicle Assembly Building VAB. In the background, space shuttle Discovery waits for its move to the VAB after being towed out of OPF-1. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis has been towed to the doors of Orbiter Processing Facility-1 OPF-1 after being towed from the Vehicle Assembly Building VAB. At left, space shuttle Discovery is being towed to the VAB after being towed out of OPF-1. The tail cone protects Discovery’s three replica shuttle main engines. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttles Atlantis foreground and Discovery appear to be nose to nose. Atlantis was towed from the Vehicle Assembly Building VAB and is being towed to Orbiter Processing Facility-1 OPF-1. Discovery was towed out of OPF-1 for its trip to the VAB. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, technicians monitor space shuttle Atlantis as it is towed from the Vehicle Assembly Building toward Orbiter Processing Facility-1 OPF-1. In the background is space shuttle Discovery after it was towed out of OPF-1. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is towed toward Orbiter Processing Facility-1 OPF-1 after being towed from the Vehicle Assembly Building VAB. In the foreground, space shuttle Discovery is being towed to the VAB after being towed out of OPF-1. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is towed inside Orbiter Processing Facility-1 after being towed earlier in the day from the Vehicle Assembly Building. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, photographers and workers snap pictures as space shuttle Atlantis is towed from the Vehicle Assembly Building toward Orbiter Processing Facility-1 OPF-1. Facing Atlantis is space shuttle Discovery after it was completely towed out from OPF-1. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttles Atlantis foreground and Discovery appear to be nose to nose. Atlantis was towed from the Vehicle Assembly Building VAB and is being towed to Orbiter Processing Facility-1 OPF-1. Discovery was towed out of OPF-1 for its trip to the VAB. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is towed toward Orbiter Processing Facility-1 OPF-1 from the Vehicle Assembly Building VAB. In the background, space shuttle Discovery waits for its move to the VAB after being towed out of OPF-1. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is being towed from the Vehicle Assembly Building over to Orbiter Processing Facility-1. Atlantis’ forward reaction control system, orbiter maneuvering system pods and three space shuttle main engines have been removed. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, workers monitor the progress as space shuttle Atlantis is towed toward Orbiter Processing Facility-1 after being towed from the Vehicle Assembly Building. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, a technician monitors space shuttle Atlantis as it is towed from the Vehicle Assembly Building toward Orbiter Processing Facility-1. A view of Atlantis’ nose cone area shows that the forward reaction control system has been removed. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Atlantis is towed from the Vehicle Assembly Building toward Orbiter Processing Facility-1 OPF-1. In the background, space shuttle Discovery faces Atlantis after it was completely towed out from OPF-1. The work is part of the Space Shuttle Program’s transition and retirement processing of the three space shuttles. Atlantis is being prepared for display at the Kennedy Space Center Visitor Complex and is scheduled to rollover to the complex in November. Photo credit: NASA/Tim Jacobs

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a technician assists as a special crane is used to lift one of the three fuel cells away from space shuttle Atlantis’ payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians assist as a special crane is used to lift one of the three fuel cells away from space shuttle Atlantis’ payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians help position a special crane in place to lift one of the three fuel cells away from space shuttle Atlantis’ payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a technician assists as a special crane lifts one of the three fuel cells away from space shuttle Atlantis’ payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians begin to open space shuttle Endeavour’s payload bay doors in order to retract an antenna. Space Shuttle Program transition and retirement work continues on Discovery and Endeavour in the orbiter processing facilities, while shuttle Atlantis is in temporary storage in high bay 4 of the Vehicle Assembly Building. Endeavour is being prepared for display at the California Science Center in Los Angeles. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians monitor the progress as a special crane lifts one of the three fuel cells away from space shuttle Atlantis’ payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians prepare to open space shuttle Endeavour’s payload bay doors in order to retract an antenna. Space Shuttle Program transition and retirement work continues on Discovery and Endeavour in the orbiter processing facilities, while shuttle Atlantis is in temporary storage in high bay 4 of the Vehicle Assembly Building. Endeavour is being prepared for display at the California Science Center in Los Angeles. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, space shuttle Atlantis’ three fuel cells are being removed from the payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians prepare to remove one of three fuel cells from space shuttle Atlantis’ payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians prepare to remove one of three fuel cells from space shuttle Atlantis’ payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians monitor the progress as a special crane lifts one of the three fuel cells away from space shuttle Atlantis’ for securing on a special platform. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians secure space shuttle Atlantis’ three fuel cells to special platforms. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians assist as a special crane is used to lift one of the three fuel cells away from space shuttle Atlantis’ payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians monitor the progress as a special crane lifts one of the three fuel cells away from space shuttle Atlantis’ payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians assist as a special crane is used to lift one of the three fuel cells away from space shuttle Atlantis’ payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians monitor the progress as a special crane lifts one of the three fuel cells away from space shuttle Atlantis’ payload bay. The fuel cells will be drained of all fluids. The hydrogen and oxygen dewars which feed reactants to the fuel cells remain in Atlantis’ mid-body and will be purged with inert gases and vented down. The work is part of the Space Shuttle Program’s transition and retirement processing of shuttle Atlantis. The orbiter is being prepared for display at the Kennedy Space Center Visitor Complex. Photo credit: NASA/Kim Shiflett

NASA employees and contractors crowd together to get a glimpse of space shuttle Atlantis (STS-135) as it rolls toward the Orbiter Processing Facility (OPF) at a wheels stop event, Thursday, July 21, 2011, at NASA's Kennedy Space Center in Cape Canaveral, Fla. Atlantis returned to Kennedy early Thursday following a 13-day mission to the International Space Station (ISS) and marking the end of the 30-year Space Shuttle Program. Overall, Atlantis spent 307 days in space and traveled nearly 126 million miles during its 33 flights. Atlantis, the fourth orbiter built, launched on its first mission on Oct. 3, 1985. Photo Credit: (NASA/Paul E. Alers)