De-multiplexer launch to activation multi-layer installation blankets in a Orbital Replaceable Unit transfer bag.

In the Space Station Processing Facility at NASA's Kennedy Space Center, STS-115 Mission Specialists (foreground, from left) Daniel Burbank, Joseph Tanner, Heidemarie Stefanyshyn-Piper, and Steve Maclean are fit checking a sequential shunt unit, electronics control unit and multiplexer de-multiplexer launch to activation multi-layer installation blankets in a large Orbital Replaceable Unit transfer bag. They and other crew members are at the center for Crew Equipment Interface Test activities. Equipment familiarization is a routine part of astronaut training and launch preparations. The mission will deliver the second port truss segment, the P3/P4 Truss, to attach to the first port truss segment, the P1 Truss, as well as deploy solar array set 2A and 4A. Launch on Space Shuttle Atlantis is scheduled for late August. Photo credit: NASA/Kim Shiflett