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ISS027-E-034386 (20 May 2011) --- Attired in his Extravehicular Mobility Unit (EMU) spacesuit, NASA astronaut Greg Chamitoff, STS-134 mission specialist, prepares to exit the International Space Station?s Quest airlock to begin the first session of extravehicular activity (EVA) for the STS-134 mission. Astronaut Andrew Feustel (out of frame), mission specialist, joined Chamitoff on the spacewalk.
