Astronauts conduct second space walk on mission STS-123

Astronauts Rick Linnehan and Mike Foreman, both STS-123 mission specialists, participate in the second scheduled session of extravehicular activity (EVA) for construction and maintenance on the International Space Station. During the 7-hour, 8-minute spacewalk, Linnehan and Foreman, assembled the Dextre robotic arm. (UPI Photo/NASA)