STS_135_Rollover

NASA astronaut Rex Walheim watches as the space shuttle Atlantis is moved from the Orbiter Processing facility to the Vehicle Assembly Building at the Kennedy Space Center on Tuesday, May 17, 2011, in Florida. The move, known as rollover, is a milestone in the preparation for launch as the orbiter leaves its processing hangar to be prepped for its final flight. ( NASA Photo / Houston Chronicle, Smiley N. Pool ).

JSC2011-E-059411 (17 May 2011) --- NASA astronaut Rex Walheim, STS-135 mission specialist, watches as the space shuttle Atlantis is moved May 17, 2011. The move, known as rollover, is a milestone in the preparation for launch as the orbiter leaves its processing hangar to be prepped for its final flight. Photo credit: NASA Photo/Houston Chronicle, Smiley N. Pool

Photographer Smiley N. Pool
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