Tanner performs first EVA during STS 115 / Expedition 13 joint operations

S115-E-05532 (12 Sept. 2006) --- It was "installation day" on the International Space Station on Sept. 12, 2006. The Atlantis and Expedition 13 crews worked on attaching the P3/P4 truss during the first of three scheduled spacewalks by STS-115 shuttle crewmembers. Astronaut Joseph R. Tanner, mission specialist, pictured as he translated along the station hardware, was joined by astronaut Heidemarie M. Stefanyshyn-Piper, mission specialist.