Atlantis: Ready for Launch
Space shuttle Atlantis STS-135 crew Commander Chris Ferguson, left, speaks before they begin launch and ascent simulation training at Johnson Space Center Thursday, June 16, 2011, in Houston. Joining Ferguson are, from left to right, Pilot Doug Hurley, Mission Specialist's Sandra Magnus and Rex Walheim. The crew is being prepared for a July 8, 2011 mission that will bring a close to the space shuttle program. (AP Photo/David J. Phillip)
