Tanner and Stefanyshyn-Piper perform first EVA during STS-115 / Expedition 13 joint operations

S115-E-05623 (12 Sept. 2006) --- Astronaut Heidemarie M. Stefanyshyn-Piper, STS-115 mission specialist, releases the restraints on the forward Solar Array Blanket Box (SABB) during the Sept. 12 spacewalk, which she shared with astronaut Joseph R. Tanner, partially visible at top edge of frame. The two participated in the first of three scheduled STS-115 extravehicular activity (EVA) sessions as the Atlantis astronauts and the Expedition 13 crew members join efforts this week to resume construction of the International Space Station.