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s115e05663
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s115e05663

August 26, 2011
Astronauts Joseph R. Tanner (left) and Heidemarie M. Stefanyshyn-Piper, both STS-115 mission specialists, work in tandem during the mission's first session of extravehicular activity (EVA) while the Space Shuttle Atlantis was docked with the International Space Station. During today's spacewalk, Tanner and Stefanyshyn-Piper worked to connect power cables on the P3/P4 truss, release restraints for the Solar Array Blanket Boxes that hold the solar arrays and the Beta Gimbal Assemblies that serve as the structural link between the truss' integrated electronics and the Solar Array Wings. Stefanyshyn-Piper and Tanner also installed the Solar Alpha Rotary Joint and completed the connection of electrical cables between the new P3 truss and the P1 truss.


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