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KENNEDY SPACE CENTER, FLA. -- Sitting in a slidewire basket on the 195-foot level of the Fixed Service Structure, Launch Pad 39B, are STS-112 Mission Specialists Fyodor Yurchikhin (left) and David Wolf. They and the rest of the crew are practicing emergency egress from the pad during Terminal Countdown Demonstration Test activities. 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 fir…