The STS-112 crew wave to spectators as they exit the Operations and Checkout Building.

The STS-112 crew wave to spectators as they exit the Operations and Checkout Building for their ride to Launch Pad 39B and the launch scheduled 3:46 p.m. EDT. Leading the way are Pilot Pamela Melroy and Commander Jeffrey Ashby. In the second row are Mission Specialists David Wolf (left) and Sandra Magnus. Behind them are Mission Specialists Fyodor Yurchikhin and Piers Sellers. Sellers, Magnus and Yurchikhin are making their first Shuttle flights. STS-112 is the 15th assembly flight to the International Space Station, 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. On the 11-day mission, three spacewalks are planned to attach the S1 truss to the Station.