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S133-E-007425 (28 Feb. 2011) --- NASA astronauts Cady Coleman, Expedition 26 flight engineer, Alvin Drew and Michael Barratt (background), both STS-133 mission specialists, enjoy a light moment in the Quest airlock of the International Space Station as the mission?s first spacewalk draws to a close. Photo credit: NASA or National Aeronautics and Space Administration
