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August 1, 2011
Astronaut David A. Wolf, STS-112 mission specialist, works near the S0 (S-Zero) Truss on the International Space Station (ISS) during the missions third and final scheduled session of extravehicular activity (EVA). The airlock spur, a route used by spacewalkers to get from the Quest airlock on the station to the outpost's truss, is visible in the upper left portion of the frame.

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