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ISS016-E-012572 (24 Nov. 2007) --- Astronaut Peggy Whitson, Expedition 16 commander, participates in a session of extravehicular activity (EVA) as construction continues on the International Space Station. During the 7-hour, 4-minute spacewalk Whitson and astronaut Daniel Tani (out of frame), flight engineer, continued the external outfitting of the Harmony node in its new position in front of the Destiny laboratory.
