The Shuttle Carrier Aircraft with orbiter Columbia riding piggyback taxis down the runway at the KSC Shuttle Landing Facility after landing. The ferry flight began in California March 1. Unfavorable weather conditions kept it on the ground at Dyess AFB, Texas, until it could return to Florida. It landed temporarily at the CCAFS Skid Strip until Atlantis, which had already landed at the SLF, could be transferred. Columbia is returning from a 17-month-long modification and refurbishment process as part of a routine maintenance plan. The orbiter will next fly on mission STS-107, scheduled Oct. 25 KSC01pp0507

The Space Shuttle program was the United States government's manned launch vehicle program from 1981 to 2011, administered by NASA and officially beginning in 1972. The Space Shuttle system—composed of an orbiter launched with two reusable solid rocket boosters and a disposable external fuel tank— carried up to eight astronauts and up to 50,000 lb (23,000 kg) of payload into low Earth orbit (LEO). When its mission was complete, the orbiter would re-enter the Earth's atmosphere and lands as a glider. Although the concept had been explored since the late 1960s, the program formally commenced in 1972 and was the focus of NASA's manned operations after the final Apollo and Skylab flights in the mid-1970s. It started with the launch of the first shuttle Columbia on April 12, 1981, on STS-1. and finished with its last mission, STS-135 flown by Atlantis, in July 2011.