ISS026-E-030869 (28 Feb. 2011) --- NASA astronaut Steve Bowen, STS-133 mission specialist, participates in the mission?s first session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the six-hour, 34-minute spacewalk, Bowen and NASA astronaut Alvin Drew (out of frame), mission specialist, installed the J612 power extension cable, move a failed ammonia pump module to the External Stowage Platform 2 on the Quest Airlock for return to Earth at a later date, installed a camera wedge on the right hand truss segment, installed extensions to the mobile transporter rail and exposed the Japanese ?Message in a Bottle? experiment to space.