U.S. astronauts Mike Foreman and Randy Bresnik wrapped up the second space walk for space shuttle Atlantis's STS-129 mission on Saturday, NASA said. This is a file photo of Astronaut Robert L. Satcher Jr. works outside the International Space Station as he participates in Space Shuttle Atlantis' first spacewalk of mission STS-129 as construction and maintenance continue on the International Space Station in this photo released by NASA and taken November 19, 2009.[Xinhua/Reuters File Photo]