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S116-E-06578 (16 Dec. 2006) --- Astronaut Robert L. Curbeam, Jr., STS-116 mission specialist, participates in the mission's third planned session of extravehicular activity (EVA) as construction resumes on the International Space Station. Astronaut Sunita L. Williams, (out of frame), Expedition 14 flight engineer, also participated in the 7-hour, 31-minute spacewalk.
