CAPE CANAVERAL, Fla. – At the slidewire basket area at NASA Kennedy Space Center's Launch Pad 39A, a Mode II-IV exercise is under way that allows teams to practice an emergency response, including helicopter evacuation to local hospitals. The exercise involves NASA fire rescue personnel, volunteers portraying astronauts with simulated injuries, helicopters and personnel from the Air Force’s 920th Rescue Wing and medical trauma teams at three central Florida hospitals. The Space Shuttle Program and U.S. Air Force are conducting the emergency simulation. Photo credit: NASA/Jack Pfaller KSC-2009-5282

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.