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S133-E-008586 (2 March 2011) --- Attired in his Extravehicular Mobility Unit (EMU) spacesuit, NASA astronaut Alvin Drew, STS-133 mission specialist, enters the International Space Station's Quest airlock as the mission's second spacewalk draws to a close. NASA astronaut Michael Barratt (left), STS-133 mission specialist; and European Space Agency astronaut Paolo Nespoli, Expedition 26 flight engineer, assisted Drew. Photo credit: NASA or National Aeronautics and Space Administration
