STS-115 MS Tanner working on the P3/P4 Truss during EVA

S115-E-06135 (15 Sept. 2006) --- Astronaut Joseph R. Tanner, STS-115 mission specialist and a veteran NASA spacewalker, is pictured during work on the P3/P4 truss on the third and final EVA, supported by the Atlantis and International Space Station crews this week.