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KENNEDY SPACE CENTER, FLA. -- During Terminal Countdown Demonstration Test activities, the STS-112 crew poses for a group photo near the launch pad where Space Shuttle Atlantis waits for launch. Standing left to right are Mission Specialist Piers Sellers, Commander Jeffrey Ashby, Mission Specialist David Wolf, Pilot Pamela Melroy, and Mission Specialists Sandra Magnus and Fyodor Yurchikhin, who is with the Russian Space Agency. The TCDT includes emergency egress training and a simulated launch countdown. Mission STS-112 aboard Space Shuttle Atlantis is scheduled to launch no earlier than Oct. 2, between 2 and 6 p.m. EDT. STS-112 is the 15th assembly mission to the International Space Station. Atlantis will be carrying the S1 Integrated Truss Structure, the first starboard truss segment, to be attached to the central truss segment, S0, and the Crew and Equipment Translation Aid (CETA) Cart A. The CETA is the first of two human-powered carts that will ride along the ISS railway, providing mobile work platforms for future spacewalking astronauts.