CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, United Space Alliance technicians begin to install space shuttle Endeavour’s left orbital maneuvering system OMS pod. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center in Florida, space shuttle Endeavour’s left orbital maneuvering system OMS pod glides along the rails in Orbiter Processing Facility-2 toward the aft of the shuttle. The OMS pod is being reinstalled on Endeavour following a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, United Space Alliance senior aerospace technician and spacecraft operator Charles J. Beason toggles the switches on space shuttle Endeavour’s flight deck during Space Shuttle Program transition and retirement activities. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Kennedy Space Center Director Bob Cabana, right, shows a space shuttle high-temperature reusable surface insulation HRSI tile to Florida’s Lt. Gov. Jennifer Carroll during a tour of Kennedy’s Orbiter Processing Facility-1. The tile is part of the shuttle’s thermal protection system which covers the shuttle’s exterior and protects it from the heat of re-entry. The tour coincided with Carroll’s visit to Kennedy for a meeting with Cabana. Atlantis is being prepared for public display at the Kennedy Space Center Visitor Complex in 2013. The groundbreaking for Atlantis’ exhibit hall took place in January Atlantis is scheduled to be moved to the visitor complex in November. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, operations to lift the left orbital maneuvering system OMS pod of space shuttle Endeavour are under way. The OMS pod is being reinstalled on Endeavour following a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Space shuttle Endeavour lifts off from the Shuttle Landing Facility runway at NASA's Kennedy Space Center in Florida at 7:22 a.m. EDT mounted atop NASA's Shuttle Carrier Aircraft, or SCA. The SCA, a modified 747 jetliner, will fly Endeavour to Houston and then to Los Angeles where it will be placed on public display at the California Science Center. This is the final ferry flight scheduled in the Space Shuttle Program era. For more information on the shuttles' transition and retirement, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, the flight deck of space shuttle Endeavour is illuminated during Space Shuttle Program transition and retirement activities. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, United Space Alliance technicians rotate the left orbital maneuvering system OMS pod of space shuttle Endeavour as it is lifted from its transporter. The OMS pod is being reinstalled on Endeavour following a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – A crane moves the left orbital maneuvering system OMS pod toward the aft of space shuttle Endeavour in Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida. The OMS pod is being reinstalled on Endeavour following a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Florida’s Lt. Gov. Jennifer Carroll, left, gets the feel of the commander’s seat on the flight deck of space shuttle Atlantis during a tour of Kennedy Space Center’s Orbiter Processing Facility-1. Kennedy Director Bob Cabana, a former astronaut, is right at home in the pilot’s seat beside her. The tour coincided with Carroll’s visit to Kennedy for a meeting with Cabana. Atlantis is being prepared for public display at the Kennedy Space Center Visitor Complex in 2013. The groundbreaking for Atlantis’ exhibit hall took place in January Atlantis is scheduled to be moved to the visitor complex in November. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians begin to bond and seal the tiles around the access panels to space shuttle Endeavour’s forward reaction control system, or FRCS. The FRCS helped a shuttle maneuver while in orbit. Endeavour’s FRCS was removed and sent to White Sands Test Facility in New Mexico to be cleaned of its toxic propellants and was reinstalled on the shuttle in February. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – Kennedy Space Center Director Bob Cabana, left, a former astronaut, explains how access is gained to a shuttle’s midbody, or payload bay, to Florida’s Lt. Gov. Jennifer Carroll from the middeck of space shuttle Atlantis during a tour of Kennedy’s Orbiter Processing Facility-1. The tour coincided with Carroll’s visit to Kennedy for a meeting with Cabana. Atlantis is being prepared for public display at the Kennedy Space Center Visitor Complex in 2013. The groundbreaking for Atlantis’ exhibit hall took place in January Atlantis is scheduled to be moved to the visitor complex in November. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, preparations are under way to begin bonding and sealing the tiles around the access panels to space shuttle Endeavour’s forward reaction control system, or FRCS. The FRCS helped a shuttle maneuver while in orbit. Endeavour’s FRCS was removed and sent to White Sands Test Facility in New Mexico to be cleaned of its toxic propellants and was reinstalled on the shuttle in February. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, United Space Alliance technicians secure a crane to the left orbital maneuvering system OMS pod of space shuttle Endeavour. The OMS pod is being reinstalled on Endeavour following a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Florida’s Lt. Gov. Jennifer Carroll sits in the commander’s seat on the flight deck of space shuttle Atlantis during a tour of Kennedy Space Center’s Orbiter Processing Facility-1. The tour coincided with Carroll’s visit to Kennedy for a meeting with Cabana. Atlantis is being prepared for public display at the Kennedy Space Center Visitor Complex in 2013. The groundbreaking for Atlantis’ exhibit hall took place in January Atlantis is scheduled to be moved to the visitor complex in November. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. - At the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida, preparations are under way to push NASA's Shuttle Carrier Aircraft, or SCA, from beneath the platforms of the mate-demate device. Space shuttle Endeavour has been secured atop the aircraft for its upcoming ferry flight. The SCA, a modified 747 jetliner, will fly Endeavour to Los Angeles where it will be placed on public display at the California Science Center. This is the final ferry flight scheduled in the Space Shuttle Program era. For more information on the shuttles' transition and retirement, visit http://www.nasa.gov/transition. Photo credit: NASA/Charisse Nahser

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, United Space Alliance technicians prepare to install the left orbital maneuvering system OMS pod on space shuttle Endeavour. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Kennedy Space Center Director Bob Cabana, right, shows a space shuttle low-temperature reusable surface insulation LRSI tile to Florida’s Lt. Gov. Jennifer Carroll during a tour of Kennedy’s Orbiter Processing Facility-1. The tile is part of the shuttle’s thermal protection system which covers the shuttle’s exterior and protects it from the heat of re-entry. The tour coincided with Carroll’s visit to Kennedy for a meeting with Cabana. Atlantis is being prepared for public display at the Kennedy Space Center Visitor Complex in 2013. The groundbreaking for Atlantis’ exhibit hall took place in January Atlantis is scheduled to be moved to the visitor complex in November. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Florida’s Lt. Gov. Jennifer Carroll asks questions of her guides during a tour of Kennedy Space Center’s Orbiter Processing Facility-1 as they scrutinize the forward end of space shuttle Atlantis. United Space Alliance manager Buddy McKenzie is at left, and Kennedy Director Bob Cabana, at right. The tour coincided with Carroll’s visit to Kennedy for a meeting with Cabana. Atlantis is being prepared for public display at the Kennedy Space Center Visitor Complex in 2013. The groundbreaking for Atlantis’ exhibit hall took place in January Atlantis is scheduled to be moved to the visitor complex in November. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, United Space Alliance technicians lift the left orbital maneuvering system OMS pod of space shuttle Endeavour from its transporter. The OMS pod is being reinstalled on Endeavour following a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, preparations are under way to power up space shuttle Endeavour during Space Shuttle Program transition and retirement activities. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, United Space Alliance technicians prepare to lift the left orbital maneuvering system OMS pod of space shuttle Endeavour. The OMS pod is being reinstalled on Endeavour following a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Space shuttle Endeavour takes to the sky over the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida at 7:22 a.m. EDT mounted atop NASA's Shuttle Carrier Aircraft, or SCA. In the distance is Launch Pad 39A, the starting point for many space shuttle missions. The SCA, a modified 747 jetliner, will fly Endeavour to Houston and then to Los Angeles where it will be placed on public display at the California Science Center. This is the final ferry flight scheduled in the Space Shuttle Program era. For more information on the shuttles' transition and retirement, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Florida’s Lt. Gov. Jennifer Carroll, left, examines one of the tires on space shuttle Atlantis during a tour of Kennedy Space Center’s Orbiter Processing Facility-1. Kennedy’s Director Bob Cabana, at right, is her guide. The tour coincided with Carroll’s visit to Kennedy for a meeting with Cabana. Atlantis is being prepared for public display at the Kennedy Space Center Visitor Complex in 2013. The groundbreaking for Atlantis’ exhibit hall took place in January Atlantis is scheduled to be moved to the visitor complex in November. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, United Space Alliance technicians position the left orbital maneuvering system OMS pod for reinstallation on space shuttle Endeavour. The OMS pod underwent a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, United Space Alliance technicians lift and rotate the left orbital maneuvering system OMS pod of space shuttle Endeavour above its transporter. The OMS pod is being reinstalled on Endeavour following a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Florida’s Lt. Gov. Jennifer Carroll signs a wall of the White Room during a tour of Kennedy Space Center’s Orbiter Processing Facility-1. The room affords access to the shuttle as it is undergoing processing in the facility. Everyone visiting the interior of the shuttle – astronauts, technicians and guests alike - is given the opportunity to “autograph” a wall of the room. The tour coincided with Carroll’s visit to Kennedy for a meeting with Cabana. Atlantis is being prepared for public display at the Kennedy Space Center Visitor Complex in 2013. The groundbreaking for Atlantis’ exhibit hall took place in January Atlantis is scheduled to be moved to the visitor complex in November. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, United Space Alliance technicians attach a crane to the left orbital maneuvering system OMS pod of space shuttle Endeavour. The OMS pod is being reinstalled on Endeavour following a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Kennedy Space Center Director Bob Cabana, left, briefs Florida’s Lt. Gov. Jennifer Carroll before a tour of Kennedy’s Orbiter Processing Facility-1, the hangar in which space shuttle Atlantis is being prepared for retirement. The tour coincided with Carroll’s visit to Kennedy for a meeting with Cabana. Atlantis is being prepared for public display at the Kennedy Space Center Visitor Complex in 2013. The groundbreaking for Atlantis’ exhibit hall took place in January Atlantis is scheduled to be moved to the visitor complex in November. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Space shuttle Endeavour’s left orbital maneuvering system OMS pod is lowered into position on the shuttle in Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida. The OMS pod is being reinstalled on Endeavour following a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Kennedy Space Center Director Bob Cabana, left, explains the placement of high-temperature reusable surface insulation HRSI tile on the underbelly of space shuttle Atlantis to Florida’s Lt. Gov. Jennifer Carroll during a tour of Kennedy’s Orbiter Processing Facility-1. The tile is part of the shuttle’s thermal protection system which covers the shuttle’s exterior and protects it from the heat of re-entry. The tour coincided with Carroll’s visit to Kennedy for a meeting with Cabana. Atlantis is being prepared for public display at the Kennedy Space Center Visitor Complex in 2013. The groundbreaking for Atlantis’ exhibit hall took place in January Atlantis is scheduled to be moved to the visitor complex in November. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, space shuttle Endeavour’s left orbital maneuvering system OMS pod is in position on the aft of the shuttle and ready for installation. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Kennedy Space Center Director Bob Cabana, right, shows a space shuttle felt reusable surface insulation FRSI blanket to Florida’s Lt. Gov. Jennifer Carroll during a tour of Kennedy’s Orbiter Processing Facility-1. The blanket is part of the shuttle’s thermal protection system which covers the shuttle’s exterior and protects it from the heat of re-entry. The tour coincided with Carroll’s visit to Kennedy for a meeting with Cabana. Atlantis is being prepared for public display at the Kennedy Space Center Visitor Complex in 2013. The groundbreaking for Atlantis’ exhibit hall took place in January Atlantis is scheduled to be moved to the visitor complex in November. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – Slowly, space shuttle Endeavour’s left orbital maneuvering system OMS pod glides into position alongside the shuttle in Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida. The OMS pod is being reinstalled on Endeavour following a complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the shuttle’s transition and retirement processing. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Space shuttle Endeavour takes to the sky from the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida at 7:22 a.m. EDT mounted atop NASA's Shuttle Carrier Aircraft, or SCA. In the background is the 525-foot-tall Vehicle Assembly Building where the shuttles were attached to their external fuel tank/solid rocket booster stacks. The SCA, a modified 747 jetliner, will fly Endeavour to Houston and then to Los Angeles where it will be placed on public display at the California Science Center. This is the final ferry flight scheduled in the Space Shuttle Program era. For more information on the shuttles' transition and retirement, visit http://www.nasa.gov/transition. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a United Space Alliance technician, with a tool tethered to his wrist, bonds and seals the tiles around the access panels to space shuttle Endeavour’s forward reaction control system, or FRCS. The FRCS helped a shuttle maneuver while in orbit. Endeavour’s FRCS was removed and sent to White Sands Test Facility in New Mexico to be cleaned of its toxic propellants and was reinstalled on the shuttle in February. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Frankie Martin

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, technicians assist as space shuttle Endeavour is being towed from the Vehicle Assembly Building to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – Space shuttle Endeavour departs from the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida at 7:22 a.m. EDT mounted atop NASA's Shuttle Carrier Aircraft, or SCA. The SCA, a modified 747 jetliner, will fly Endeavour to Houston and then to Los Angeles where it will be placed on public display at the California Science Center. This is the final ferry flight scheduled in the Space Shuttle Program era. For more information on the shuttles' transition and retirement, visit http://www.nasa.gov/transition. Photo credit: NASA/Debbie Odom

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is being towed from the Vehicle Assembly Building to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians remove the main propulsion system tanks from space shuttle Endeavour’s mid-body. The tanks will be retained for possible future use on the agency’s Space Launch System Program. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. For more information, visit http://www.nasa.gov/shuttle. Photo credit: Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a large crane is lifted away from space shuttle Endeavour while United Space Alliance technicians complete the installation of the left orbital maneuvering system OMS pod. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians help to install space shuttle Endeavour’s left orbital maneuvering system OMS pod. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Space shuttle Endeavour is backed away from the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida so that it can be towed to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians have completed installation of space shuttle Endeavour’s left orbital maneuvering system OMS pod. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Space shuttle Endeavour is backed away from the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida so that it can be towed to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – While wearing a safety harness, a United Space Alliance technician removes a lift connector used to mount the space shuttle Endeavour to NASA's Shuttle Carrier Aircraft, or SCA. The work is taking place at the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida. The SCA, a modified 747 jetliner, will fly Endeavour to Los Angeles where it will be placed on public display at the California Science Center. This is the final ferry flight scheduled in the Space Shuttle Program era. For more information on the shuttles' transition and retirement, visit http://www.nasa.gov/transition. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians help to install space shuttle Endeavour’s left orbital maneuvering system OMS pod. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians begin to remove the main propulsion system tanks from space shuttle Endeavour’s mid-body. The tanks will be retained for possible future use on the agency’s Space Launch System Program. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. For more information, visit http://www.nasa.gov/shuttle. Photo credit: Dimitri Gerondidakis

CAPE CANAVERAL, Fla. --In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a crane lifts away one of space shuttle Endeavour’s main propulsion system tanks from the mid-body after it was removed by United Space Alliance technicians. The tanks will be retained for possible future use on the agency’s Space Launch System Program. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. For more information, visit http://www.nasa.gov/shuttle. Photo credit: Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Space shuttle Endeavour is backed away from the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida so that it can be towed to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians secure several of space shuttle Endeavour’s main propulsion system tanks after they were removed from the orbiter’s mid-body. The tanks will be retained for possible future use on the agency’s Space Launch System Program. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. For more information, visit http://www.nasa.gov/shuttle. Photo credit: Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – With the massive doors of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida in the background, space shuttle Endeavour is being towed from the VAB to Orbiter Processing Facility-2. Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is towed to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is being towed from the Vehicle Assembly Building to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is towed inside Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – Technicians monitor the progress as Space shuttle Endeavour is backed away from the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida so that it can be towed to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a large crane lowers the left orbital maneuvering system OMS pod on to space shuttle Endeavour so that United Space Alliance technicians can complete the installation. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians complete the work to install space shuttle Endeavour’s left orbital maneuvering system OMS pod. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is being towed to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, technicians walk alongside as space shuttle Endeavour is being towed from the Vehicle Assembly Building to Orbiter Processing Facility-2. Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a United Space Alliance technician monitors the progress as an overhead crane moves one of Endeavour’s main propulsion system tanks away from the mid-body of the orbiter. The tanks will be retained for possible future use on the agency’s Space Launch System Program. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. For more information, visit http://www.nasa.gov/shuttle. Photo credit: Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians attach one of space shuttle Endeavour’s main propulsion system tanks from the mid-body to an overhead crane for removal. The tanks will be retained for possible future use on the agency’s Space Launch System Program. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. For more information, visit http://www.nasa.gov/shuttle. Photo credit: Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is being prepared for its move to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is safed inside Orbiter Processing Facility-2 (OPF-2) after being towed from the Vehicle Assembly Building. Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is towed inside Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, technicians assist as space shuttle Endeavour is being towed from the Vehicle Assembly Building to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, technicians walk alongside as space shuttle Endeavour is being towed from the Vehicle Assembly Building to Orbiter Processing Facility-2. Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is towed inside Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians help to install space shuttle Endeavour’s left orbital maneuvering system OMS pod. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, technicians prepare space shuttle Endeavour for its move to Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a large crane lowers the left orbital maneuvering system OMS pod on to space shuttle Endeavour so that United Space Alliance technicians can complete the installation. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is being prepared to be backed out and towed to Orbiter Processing Facility-2 (OPF-2). In the background is space shuttle Atlantis. Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is towed inside Orbiter Processing Facility-2 (OPF-2). Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, technicians walk alongside as space shuttle Endeavour is being towed from the Vehicle Assembly Building to Orbiter Processing Facility-2. Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians monitor the progress as an overhead crane lowers one of Endeavour’s main propulsion system tanks after it was removed from the orbiter’s mid-body. The tanks will be retained for possible future use on the agency’s Space Launch System Program. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. For more information, visit http://www.nasa.gov/shuttle. Photo credit: Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a United Space Alliance technician monitors the progress as an overhead crane moves one of Endeavour’s main propulsion system tanks away from the mid-body of the orbiter. The tanks will be retained for possible future use on the agency’s Space Launch System Program. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. For more information, visit http://www.nasa.gov/shuttle. Photo credit: Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Space shuttle Endeavour flies over the solid rocket booster Assembly and Refurbishment Facility in Launch Complex 39 as it departs from NASA's Kennedy Space Center in Florida at 7:22 a.m. EDT on the back of NASA's Shuttle Carrier Aircraft, or SCA. The SCA, a modified 747 jetliner, will fly Endeavour to Houston and then to Los Angeles where it will be placed on public display at the California Science Center. This is the final ferry flight scheduled in the Space Shuttle Program era. For more information on the shuttles' transition and retirement, visit http://www.nasa.gov/transition. Photo credit: NASA/Debbie Odom

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians secure several of space shuttle Endeavour’s main propulsion system tanks after they were removed from the orbiter’s mid-body. The tanks will be retained for possible future use on the agency’s Space Launch System Program. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. For more information, visit http://www.nasa.gov/shuttle. Photo credit: Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – At NASA’s Kennedy Space Center in Florida, technicians walk alongside as space shuttle Endeavour is being towed from the Vehicle Assembly Building to Orbiter Processing Facility-2. Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a main propulsion system tank will be removed from space shuttle Endeavour’s mid-body by United Space Alliance technicians. The main propulsion system tanks will be retained for possible future use on the agency’s Space Launch System Program. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. For more information, visit http://www.nasa.gov/shuttle. Photo credit: Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians help to install space shuttle Endeavour’s left orbital maneuvering system OMS pod. The OMS pod underwent complete deservicing and cleaning at White Sands Space Harbor in New Mexico, part of the transition and retirement processing of each shuttle. Endeavour is being prepared for public display at the California Science Center in Los Angeles. 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/shuttle. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, space shuttle Endeavour is being prepared to be backed out and towed to Orbiter Processing Facility-2 (OPF-2). In the background is space shuttle Atlantis. Shuttle Endeavour will remain in OPF-2 so that the orbiter maneuvering system (OMS) pods and forward reaction control system can be installed. Technicians also will offload water and Freon gas from lines located in Endeavour’s midbody. The work is part of Endeavour’s transition and retirement processing. The spacecraft is being prepared for public display at the California Science Center in Los Angeles. Endeavour flew 25 missions, spent 299 days in space, orbited Earth 4,671 times and traveled 122, 883, 151 miles over the course of its 19-year career. Endeavour’s STS-134 and final mission was completed after landing on June 1, 2011. Photo credit: Kim Shiflett

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, the area surrounding space shuttle Endeavour’s airlock is cleared of all tools and equipment before its hatch is closed for the final time during processing for the shuttle’s retirement. 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, designated OV-105, 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/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, the camera captures a final view through space shuttle Endeavour’s airlock hatch into the payload bay after the hatch is closed for the final time during processing for the shuttle’s retirement. 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, designated OV-105, 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/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, the tail cone is being built up for installation on space shuttle Endeavour. The tail cone protects space shuttle main engines during ferry flights on top of the Shuttle Carrier Aircraft, or SCA. 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/shuttle. Photo credit: NASA/Jim Grossmann

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, the hatch of space shuttle Endeavour’s airlock has been closed and sealed for the final time during processing for the shuttle’s retirement. 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, designated OV-105, 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/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, stowage of a Ku-band antenna at the forward end of space shuttle Endeavour’s payload bay is in progress in preparation for final closure of the shuttle’s payload bay doors. The antenna, which resembles a mini-satellite dish, was used to transmit audio, video and data between the shuttle and ground stations on Earth. 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/Cory Huston

CAPE CANAVERAL, Fla. – Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians use a crane to pick up the right side tail cone for buildup on space shuttle Endeavour. The tail cone protects space shuttle main engines during ferry flights on top of the Shuttle Carrier Aircraft, or SCA. 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/shuttle. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians prepare the right side tail cone for buildup on space shuttle Endeavour. The tail cone protects space shuttle main engines during ferry flights on top of the Shuttle Carrier Aircraft, or SCA. 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/shuttle. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida, a Ku-band antenna is stowed at the forward end of space shuttle Endeavour’s payload bay in preparation for final closure of the shuttle’s payload bay doors. The antenna, which resembles a mini-satellite dish, was used to transmit audio, video and data between the shuttle and ground stations on Earth. 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/Cory Huston

CAPE CANAVERAL, Fla. – Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians use a crane to pick up the right side tail cone for buildup on space shuttle Endeavour. The tail cone protects space shuttle main engines during ferry flights on top of the Shuttle Carrier Aircraft, or SCA. 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/shuttle. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, one of several technicians installs the forward reaction control system (FRCS) on space shuttle Endeavour. The work is part of the Space Shuttle Program transition and retirement processing of Endeavour. The FRCS helped maneuver a shuttle while it was in orbit. The FRCS was removed from Endeavour and sent to White Sands Test Facility in N.M. to be cleaned of its toxic propellants. Endeavour is being prepared for display at the California Science Center in Los Angeles. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Inside Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a Hyster forklift carries replica shuttle main engine 2, or RSME 2, for installation on space shuttle Endeavour. The orbiter is surrounded by work platforms allowing access to all areas of the spacecraft. 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/shuttle. Photo credit: NASA/David Lee

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians help lift away the large crane that was used to lower the forward reaction control system (FRCS) for installation on space shuttle Endeavour. The work is part of the Space Shuttle Program transition and retirement processing of Endeavour. The FRCS helped maneuver a shuttle while it was in orbit. The FRCS was removed from Endeavour and sent to White Sands Test Facility in N.M. to be cleaned of its toxic propellants. Endeavour is being prepared for display at the California Science Center in Los Angeles. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – NASA and contractor engineers are on hand at the Firing Room 4 Integration Console as operations to power down space shuttle Endeavour for the final time are under way in Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida. Standing, from left, are John Apfelbaum, Jeff Wheeler, Bob Walker and Michael Ciannilli of NASA. Seated, from left, are former United Space Alliance test project engineer Greg Koch, Debbie Awtonomow of NASA, and John McClellan of United Space Alliance. The Integration Console manages all orbiter systems including those needed for shuttle power up and launch. 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/Tim Jacobs

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, United Space Alliance technicians align the hatch of space shuttle Endeavour’s airlock for its final closure during processing for the shuttle’s retirement. 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, designated OV-105, 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/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, a large crane is lifted away after it was used to lower the forward reaction control system (FRCS) for installation on space shuttle Endeavour. The work is part of the Space Shuttle Program transition and retirement processing of Endeavour. The FRCS helped maneuver a shuttle while it was in orbit. The FRCS was removed from Endeavour and sent to White Sands Test Facility in N.M. to be cleaned of its toxic propellants. Endeavour is being prepared for display at the California Science Center in Los Angeles. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, one of several technicians installs the forward reaction control system (FRCS) on space shuttle Endeavour. The work is part of the Space Shuttle Program transition and retirement processing of Endeavour. The FRCS helped maneuver a shuttle while it was in orbit. The FRCS was removed from Endeavour and sent to White Sands Test Facility in N.M. to be cleaned of its toxic propellants. Endeavour is being prepared for display at the California Science Center in Los Angeles. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. –In Orbiter Processing Facility-2 at NASA’s Kennedy Space Center in Florida, technicians assist as a large crane lowers the forward reaction control system (FRCS) for installation on space shuttle Endeavour. The work is part of the Space Shuttle Program transition and retirement processing of Endeavour. The FRCS helped maneuver a shuttle while it was in orbit. The FRCS was removed from Endeavour and sent to White Sands Test Facility in N.M. to be cleaned of its toxic propellants. Endeavour is being prepared for display at the California Science Center in Los Angeles. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Communication no longer required between Orbiter Processing Facility-2 and the Launch Control Center at NASA’s Kennedy Space Center in Florida, a headset is left on a console on space shuttle Endeavour’s flight deck after the shuttle is powered down for the final time. 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/Ben Smegelsky