During emergency egress training from the launch pad, the STS-112 crew listens to a trainer about use of the system. The crew members are, from left in the center, Commander Jeffrey Ashby, Mission Specialists Sandra Magnus, Piers Sellers and Fyodor Yurchikhin; and Pilot Pamela Melroy. In the foreground, left, is Mission Specialist David Wolf. Yurchikhin is with the Russian Space Agency. The training is part of Terminal Countdown Demonstration Test activities, which include 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.