CAPE CANAVERAL, FL - JULY 08: In this handout provided by National Aeronautics and Space Administration (NASA), the STS-135 crew (L-R), Sandra Magnus, mission specialist, Rex Walheim, mission ... more 
CAPE CANAVERAL, FL - JULY 08: In this handout provided by National Aeronautics and Space Administration (NASA), the STS-135 crew (L-R), Sandra Magnus, mission specialist, Rex Walheim, mission specialist, Doug Hurley, pilot, and Chris Ferguson, commander, ride in the Astrovan to launch pad 39A to board space shuttle Atlantis on July 8, 2011 at the NASA Kennedy Space Center in Cape Canaveral, Florida. The launch of Atlantis, STS-135, is the final flight of the shuttle program, a 12-day mission to the International Space Station. (Photo by Jerry Ross/NASA via Getty Images) less 
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Fri, Jul 8, 2011 6:34 PM EDT