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Anchored to a Canadarm2 mobile foot restraint, European Space Agency astronaut Christer Fuglesang, STS-128 mission specialist, participates in the mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the six-hour, 39-minute spacewalk, Fuglesang and NASA astronaut John "Danny" Olivas (out of frame), mission specialist, installed the new Ammonia Tank Assembly on the Port 1 Truss and stowed the empty tank assembly into the Space Shuttle Discovery's cargo bay.