CAPE CANAVERAL, Fla. -- At a slow pace of about 1 mph, space shuttle Atlantis makes its final journey from the Vehicle Assembly Building to Launch Pad 39A at NASA's Kennedy Space Center in Florida. First motion was at 8:42 p.m. EDT. It will take the crawler-transporter about six hours to carry the shuttle, attached to its external fuel tank and solid rocket boosters, to the seaside launch pad. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis, attached to its external fuel tank and solid rocket boosters atop a mobile launcher platform, slowly inches out of the Vehicle Assembly Building for the final time. "Rollout," to Launch Pad 39A at NASA's Kennedy Space Center in Florida began at 8:42 p.m. EDT. It will take the crawler-transporter about six hours to carry the shuttle stack to its seaside launch pad. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

CAPE CANAVERAL, Fla. -- Dawn approaches after space shuttle Atlantis completed its historic final journey to Launch Pad 39A from NASA Kennedy Space Center's Vehicle Assembly Building. Atlantis was secured or "hard down," at its seaside launch pad at 3:29 a.m. EDT on Wednesday, June 1. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

CAPE CANAVERAL, Fla. -- Dawn approaches after space shuttle Atlantis completed its historic final journey to Launch Pad 39A from NASA Kennedy Space Center's Vehicle Assembly Building. Atlantis was secured or "hard down," at its seaside launch pad at 3:29 a.m. EDT on Wednesday, June 1. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

Cape Canaveral, Fla. -- Spectators gather to watch space shuttle Atlantis make its historic final journey to Launch Pad 39A from NASA Kennedy Space Center's Vehicle Assembly Building. First motion was at 8:42 p.m. EDT. It will take the crawler-transporter about six hours to carry the shuttle, attached to its external fuel tank and solid rocket boosters, to the seaside launch pad. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

CAPE CANAVERAL, Fla. -- Bathed in xenon lights, space shuttle Atlantis embarks on its final journey from the Vehicle Assembly Building to Launch Pad 39A at NASA's Kennedy Space Center in Florida. First motion was at 8:42 p.m. EDT. It will take the crawler-transporter about six hours to carry the shuttle, attached to its external fuel tank and solid rocket boosters, to the seaside launch pad. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

CAPE CANAVERAL, Fla. -- Sunrise at Launch Pad 39A at NASA's Kennedy Space Center in Florida finds space shuttle Atlantis after completing its historic and final journey from the Vehicle Assembly Building. Atlantis was secured or "hard down," at its seaside launch pad at 3:29 a.m. EDT on Wednesday, June 1. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

CAPE CANAVERAL, Fla. -- Dawn approaches after space shuttle Atlantis completed its historic final journey to Launch Pad 39A from NASA Kennedy Space Center's Vehicle Assembly Building. Atlantis was secured or "hard down," at its seaside launch pad at 3:29 a.m. EDT on Wednesday, June 1. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

CAPE CANAVERAL, Fla. -- At a slow pace of about 1 mph, space shuttle Atlantis makes its final journey from the Vehicle Assembly Building to Launch Pad 39A at NASA's Kennedy Space Center in Florida. First motion was at 8:42 p.m. EDT. It will take the crawler-transporter about six hours to carry the shuttle, attached to its external fuel tank and solid rocket boosters, to the seaside launch pad. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: Courtesy of Scott Andrews/Canon

CAPE CANAVERAL, Fla. -- Accompanying space shuttle Atlantis on its "rollout" to Launch Pad 39A at NASA's Kennedy Space Center in Florida are from left, STS-135 Commander Chris Ferguson, Pilot Doug Hurley, Mission Specialists Sandy Magnus and Rex Walheim. It will take the crawler-transporter about six hours to carry the shuttle stack to its seaside launch pad. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: Courtesy of Scott Andrews/Canon

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis made its historic final journey, or "rollout," to Launch Pad 39A after its 3.4 mile trek from NASA Kennedy Space Center's Vehicle Assembly Building. Atlantis was secured or "hard down," at its seaside launch pad at 3:29 a.m. EDT on Wednesday, June 1. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: Courtesy of Scott Andrews/Canon

CAPE CANAVERAL, Fla. -- Sunrise at Launch Pad 39A at NASA's Kennedy Space Center in Florida finds space shuttle Atlantis after completing its historic and final journey from the Vehicle Assembly Building. Atlantis was secured or "hard down," at its seaside launch pad at 3:29 a.m. EDT on Wednesday, June 1. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

CAPE CANAVERAL, Fla. -- Dawn approaches after space shuttle Atlantis completed its historic final journey to Launch Pad 39A from NASA Kennedy Space Center's Vehicle Assembly Building. Atlantis was secured or "hard down," at its seaside launch pad at 3:29 a.m. EDT on Wednesday, June 1. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

CAPE CANAVERAL, Fla. -- Space shuttle Atlantis, attached to its external fuel tank and solid rocket boosters atop a mobile launcher platform, slowly inches out of the Vehicle Assembly Building for the final time. "Rollout," to Launch Pad 39A at NASA's Kennedy Space Center in Florida began at 8:42 p.m. EDT. It will take the crawler-transporter about six hours to carry the shuttle stack to its seaside launch pad. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

Cape Canaveral, Fla. -- Space shuttle Atlantis made its historic final journey to Launch Pad 39A after its 3.4 mile trek from NASA Kennedy Space Center's Vehicle Assembly Building. Atlantis was secured or "hard down," at its seaside launch pad at 3:29 a.m. EDT on Wednesday, June 1. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

CAPE CANAVERAL, Fla. -- Bathed in xenon lights, space shuttle Atlantis embarks on its final journey from the Vehicle Assembly Building to Launch Pad 39A at NASA's Kennedy Space Center in Florida. First motion was at 8:42 p.m. EDT. It will take the crawler-transporter about six hours to carry the shuttle, attached to its external fuel tank and solid rocket boosters, to the seaside launch pad. The milestone move, known as "rollout," paves the way for the launch of the STS-135 mission to the International Space Station, targeted for July 8. STS-135 will be the 33rd flight of Atlantis, the 37th shuttle mission to the space station, and the 135th and final mission of NASA's Space Shuttle Program. For more information visit: www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Terry Zaperach

Shuttle Atlantis viewed from the Mobil Launch Platform (MLP) departs the Vehicle Assembly Building (VAB) during it's final rollout to Launch Pad 39A at Kennedy Space Center, Cape Canaveral, Florida, USA 31 May 2011. Launch of Atlantis on the STS-135 mission to deliver supplies to the International Space Station is planned for no earlier than 08 July 2011. The STS-135 mission is planned to last eight days and will be the final flight of the Space Shuttle program.

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, workers guide the Orbiter Transporter System (OTS) under shuttle Atlantis for its move, or rollover, to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- Workers prepare to attach an exhaust hose to the Orbiter Transporter System (OTS) at Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. The OTS is being moved under shuttle Atlantis for its rollover to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. - In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, workers check out the positioning of the Orbiter Transporter System (OTS) moved under shuttle Atlantis for its rollover to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. - Workers move the Orbiter Transporter System (OTS) into Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. The OTS will be moved under shuttle Atlantis for its rollover to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, workers guide the Orbiter Transporter System (OTS) under shuttle Atlantis for its move, or rollover, to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, workers guide the Orbiter Transporter System (OTS) under shuttle Atlantis for its move, or rollover, to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, workers guide the Orbiter Transporter System (OTS) under shuttle Atlantis for its move, or rollover to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, workers secure the Orbiter Transporter System (OTS) to shuttle Atlantis for its move, or rollover, to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, workers guide the Orbiter Transporter System (OTS) under shuttle Atlantis for its move, or rollover, to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. - In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, workers guide the Orbiter Transporter System (OTS) under shuttle Atlantis for its move, or rollover, to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, workers guide the Orbiter Transporter System (OTS) under shuttle Atlantis for its move, or rollover to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida, workers guide the Orbiter Transporter System (OTS) under shuttle Atlantis for its move, or rollover, to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- Workers attach an exhaust hose to the Orbiter Transporter System (OTS) at Orbiter Processing Facility-1 at NASA's Kennedy Space Center in Florida. The OTS is being moved under shuttle Atlantis for its rollover to the nearby Vehicle Assembly Building (VAB). Once inside the VAB, Atlantis will be joined to its solid rocket boosters and external fuel tank on the mobile launcher platform. Later this month, Atlantis is scheduled to "rollout" to Launch Pad 39A on the STS-135 mission, which will deliver the Raffaello multi-purpose logistics module packed with supplies and spare parts to the International Space Station. STS-135, targeted to launch June 28, will be the 33rd flight of Atlantis, the 37th shuttle mission to the station, and the 135th and final mission of NASA's Space Shuttle Program. For more information, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. NASA/Jack Pfaller