Photos of the Space Shuttle Atlantis mission, and some of those that preceeded it in a 30 year program that ended when the final shuttle touchdown July 21
(The drag chute is deployed as the space shuttle Atlantis lands at the Kennedy Space Center in Florida, completing STS-135, the final mission of the NASA shuttle program, on Thursday, July 21, 2011. (AP Photo/ Houston Chronicle, Smiley N. Pool))
