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At Work
STS-128 Mission Specialist John "Danny" Olivas participates in the mission's first extravehicular activity as construction and maintenance continue on the International Space Station.
During the six-hour, 35-minute spacewalk, Olivas and Mission Specialist Nicole Stott (out of frame) removed an empty ammonia tank from the station's truss and temporarily stowed it on the station's robotic arm. Olivas and Stott also retrieved the European Technology Exposure Facility and Materials International Space Station Experiment from the Columbus laboratory module and installed them on Discovery's payload bay for return.
Photo credit: NASA/JSC
September 1, 2009