The crew of STS-135 is seen as they depart the NASA Kennedy Space Center, Operations and Checkout Building and get into the Astrovan for launch pad 39A, on Friday, July 8, 2011 in Cape Canaveral, Fla. The launch of Atlantis, STS-135, is the final flight of the shuttle program, a 12-day mission to the International Space Station. Photo Credit: (NASA/Jerry Ross)