KENNEDY SPACE CENTER, FLA. -- At the mate/demate device at Kennedy Space Center's Shuttle Landing Facility, the crane lowers Atlantis close to the ground. The shuttle carrier aircraft, or SCA, can be seen in the background. Once on the ground, the orbiter will be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

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KENNEDY SPACE CENTER, FLA. -- At the mate/demate device at Kennedy Space Center's Shuttle Landing Facility, workers monitor the progress as Atlantis is lifted up from the shuttle carrier aircraft, or SCA. The orbiter will be lowered onto the ground and then towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

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KENNEDY SPACE CENTER, FLA. -- On the mate/demate device at Kennedy Space Center's Shuttle Landing Facility, technicians monitor the progress as Atlantis is lifted up from the shuttle carrier aircraft, or SCA, beneath it. The orbiter will be lowered to the ground and then towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

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KENNEDY SPACE CENTER, FLA. -- At the mate/demate device at Kennedy Space Center's Shuttle Landing Facility, Atlantis is lifted up from the shuttle carrier aircraft, or SCA. The SCA is backed away from the mate/demate device. Visible on Atlantis is the tail cone that covers and protects the main engines during the ferry flight. The orbiter will be lowered to the ground and then towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

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KENNEDY SPACE CENTER, FLA. -- At the mate/demate device at Kennedy Space Center's Shuttle Landing Facility, Atlantis is lifted up from the shuttle carrier aircraft, or SCA, beneath it. The orbiter will be lowered to the ground and then towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

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KENNEDY SPACE CENTER, FLA. -- At the mate/demate device at Kennedy Space Center's Shuttle Landing Facility, Atlantis is lifted up as the shuttle carrier aircraft, or SCA, begins to back away. The orbiter will be lowered to the ground and then towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

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KENNEDY SPACE CENTER, FLA. -- Atlantis is lowered to the ground at the mate/demate device at Kennedy Space Center's Shuttle Landing Facility. In the background the shuttle carrier aircraft, or SCA, can be seen. The orbiter will be detached from the lifting crane and then towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

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KENNEDY SPACE CENTER, FLA. -- Atlantis is slowly lowered to the ground at the mate/demate device at Kennedy Space Center's Shuttle Landing Facility. The orbiter will be detached from the lifting crane and then towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

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KENNEDY SPACE CENTER, FLA. -- On the mate/demate device at Kennedy Space Center's Shuttle Landing Facility, technicians attach a lifting crane to Atlantis. The orbiter will be lifted up from the shuttle carrier aircraft, or SCA, and lowered to the ground. Then Atlantis will be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

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KENNEDY SPACE CENTER, FLA. -- At the mate/demate device at Kennedy Space Center's Shuttle Landing Facility, work begins to lower Atlantis to the ground. In the background, a towing device is used to back the shuttle carrier aircraft, or SCA, away from the device. When the orbiter is lowered to the ground it will be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

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KENNEDY SPACE CENTER, FLA. -- At the mate/demate device at Kennedy Space Center's Shuttle Landing Facility, the lifting crane begins to lift Atlantis up from the shuttle carrier aircraft, or SCA, beneath it. Visible on Atlantis is the tail cone that covers and protects the main engines during the ferry flight. Technicians monitor the lifting process on a raised platform to the left. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

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KENNEDY SPACE CENTER, FLA. -- A soft glow surrounds Atlantis as it is lifted up from the shuttle carrier aircraft, or SCA, at the mate/demate device at Kennedy Space Center's Shuttle Landing Facility. The orbiter will be lowered to the ground and then towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Atlantis arrived at Kennedy Space Center atop the SCA on July 3 after a three-day, cross-country flight due to fuel stops and weather delays. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California on June 22 to end mission STS-117. Photo credit: NASA/Jack Pfaller.

The shuttle carrier aircraft, or SCA, and its piggyback passenge

Through broken clouds, the shuttle carrier aircraft, or SCA, and its passenger Atlantis ease their way past the Vehicle Assembly Building, at right, for a landing at the KSC Shuttle Landing Facility, known as the SLF. The aircraft is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Touchdown was at 8:27 a.m. EDT. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December.

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KENNEDY SPACE CENTER, FLA. -- On a morning where broken clouds filled the sky of Central Florida, the shuttle carrier aircraft, or SCA, and its passenger Atlantis ease their way past the NASA News Center for a landing at the KSC Shuttle Landing Facility, known as the SLF. The aircraft is a modified Boeing 747 jetliner Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Touchdown was at 8:27 a.m. EDT. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Debbie Odom

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KENNEDY SPACE CENTER, FLA. -- Through broken clouds, the shuttle carrier aircraft, or SCA, and its passenger Atlantis ease their way past the Vehicle Assembly Building, at right, for a landing at the KSC Shuttle Landing Facility, known as the SLF. The aircraft is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Touchdown was at 8:27 a.m. EDT. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Debbie Odom

The shuttle carrier aircraft and its piggyback passenger Atlanti

On a morning where broken clouds filled the sky of Central Florida, the shuttle carrier aircraft, or SCA, and its passenger Atlantis ease their way past the NASA News Center for a landing at the KSC Shuttle Landing Facility, known as the SLF. The aircraft is a modified Boeing 747 jetliner Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Touchdown was at 8:27 a.m. EDT. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December.

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KENNEDY SPACE CENTER, FLA. -- The shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis are towed across the Shuttle Landing Facility after their landing. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Visible on Atlantis is the tail cone that covers and protects the main engines during the ferry flight. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Ken Thornsley

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KENNEDY SPACE CENTER, FLA. -- Media gather at the KSC Shuttle Landing Facility to watch the arrival of the orbiter Atlantis on the back of the shuttle carrier aircraft, or SCA. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Visible on Atlantis is the tail cone that covers and protects the main engines during the ferry flight. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and included several stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Kim Shiflett

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KENNEDY SPACE CENTER, FLA. -- The shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis taxi down the runway after landing at the KSC Shuttle Landing Facility. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Visible on Atlantis is the tail cone that covers and protects the main engines during the ferry flight. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Jim Grossmann

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KENNEDY SPACE CENTER, FLA. -- After landing at the KSC Shuttle Landing Facility, the shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis are towed from the runway. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Visible on Atlantis is the tail cone that covers and protects the main engines during the ferry flight. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and included several stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Kim Shiflett

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KENNEDY SPACE CENTER, FLA. -- Struts on the shuttle carrier aircraft, or SCA, attach the orbiter Atlantis for the piggyback flight. The plane and orbiter returned from California after three days. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Visible on Atlantis is the tail cone that covers and protects the main engines during the ferry flight. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Ken Thornsley

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KENNEDY SPACE CENTER, FLA. -- After a three-day trip from California, the shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis are parked on the KSC Shuttle Landing Facility. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Visible on Atlantis is the tail cone that covers and protects the main engines during the ferry flight. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Ken Thornsley

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KENNEDY SPACE CENTER, FLA. -- After a three-day trip from California, the shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis fly around the Kennedy Space Center before landing on the KSC Shuttle Landing Facility runway. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Ken Thornsley

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KENNEDY SPACE CENTER, FLA. -- The shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis near touchdown on the runway at the KSC Shuttle Landing Facility after a three-day trip from California. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/George Shelton

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KENNEDY SPACE CENTER, FLA. -- Despite kicking up a little dust, the shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis make a smooth landing on the KSC Shuttle Landing Facility. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Kim Shiflett

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KENNEDY SPACE CENTER, FLA. -- After a three-day trip from California, the shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis kick up dust at landing on the KSC Shuttle Landing Facility runway. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Ken Thornsley

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KENNEDY SPACE CENTER, FLA. -- The shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis near touchdown on the KSC Shuttle Landing Facility. The SCA is a modified Boeing 747 jetliner. Touchdown was at 8:27 a.m. EDT. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Kim Shiflett

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KENNEDY SPACE CENTER, FLA. -- After a three-day trip from California, the shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis fly over the Kennedy Space Center before landing on the KSC Shuttle Landing Facility runway. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Ken Thornsley

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KENNEDY SPACE CENTER, FLA. -- The shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis kick up a little dust at touchdown on the KSC Shuttle Landing Facility. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Kim Shiflett

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KENNEDY SPACE CENTER, FLA. -- After a three-day trip from California, the shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis land on the KSC Shuttle Landing Facility runway. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Ken Thornsley

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KENNEDY SPACE CENTER, FLA. -- After landing at the KSC Shuttle Landing Facility, the shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis are towed from the runway. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Jim Grossmann

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KENNEDY SPACE CENTER, FLA. -- Media are gathered at the KSC Shuttle Landing Facility to watch the arrival of the orbiter Atlantis on the back of the shuttle carrier aircraft, or SCA. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Jim Grossmann

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KENNEDY SPACE CENTER, FLA. -- After a three-day trip from California, the shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis kick up dust as the wheels touch down on the KSC Shuttle Landing Facility runway. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/George Shelton

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KENNEDY SPACE CENTER, FLA. -- The shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis approach the runway at the KSC Shuttle Landing Facility after a three-day trip from California. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/George Shelton

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KENNEDY SPACE CENTER, FLA. -- After a three-day trip from California, the shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis roll down the KSC Shuttle Landing Facility runway. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Ken Thornsley

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KENNEDY SPACE CENTER, FLA. -- After a three-day trip from California, the shuttle carrier aircraft, or SCA, and its piggyback passenger Atlantis taxi down the KSC Shuttle Landing Facility runway after landing. Touchdown was at 8:27 a.m. EDT. The SCA is a modified Boeing 747 jetliner. Visible on Atlantis is the tail cone that covers and protects the main engines during the ferry flight. Atlantis landed at Edwards Air Force Base in California to end mission STS-117. The return to KSC began July 1 and took three days after stops across the country for fuel. The last stop was at Ft. Campbell in Kentucky. Weather conditions over the last leg postponed the return trip until July 3. Atlantis will be removed from the back of the SCA via the mate/demate device at the SLF. It will then be towed to the Orbiter Processing Facility to begin processing for its next launch, mission STS-122 in December. Photo credit: NASA/Ken Thornsley