STS-128 EVA 1

S128-E-007182 (1 Sept. 2009) --- Astronauts John “Danny” Olivas and Nicole Stott (partially obscured at top), both STS-128 mission specialists, participate in the mission's first session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the six-hour, 35-minute spacewalk, Olivas and Stott removed an empty ammonia tank from the station’s truss and temporarily stowed it on the station’s robotic arm.