The crew strides out of the Checkout and Operations Building on their way to the launch pad and a simulated countdown.

The STS-112 crew strides out of the Checkout and Operations Building on their way to the launch pad and a simulated countdown. On the left, front to back, are Pilot Pamela Melroy and Mission Specialists David Wolf and Fyodor Yurchikhin (RSA). On the right, front to back, are Commander Jeffrey Ashby and Mission Specialists Sandra Magnus and Piers Sellers. 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.