KSC-07pd1409

KENNEDY SPACE CENTER, FLA. -- The STS-117 crew members gather for a photo prior to suiting up for launch aboard Space Shuttle Atlantis. From left are astronaut Clayton Anderson, who is joining the Expedition 15 crew on the International Space Station; Mission Specialists James Reilly, John "Danny" Olivas, Steven Swanson and Patrick Forrester; Pilot Lee Archambault; and Commander Frederick Sturckow. Liftoff is scheduled for 7:38 p.m. today from Launch Pad 39A. The shuttle is delivering a new segment to the starboard side of the International Space Station's backbone, known as the truss. Three spacewalks are planned to install the S3/S4 truss segment, deploy a set of solar arrays and prepare them for operation. STS-117 is the 118th space shuttle flight, the 21st flight to the station, the 28th flight for Atlantis and the first of four flights planned for 2007. Photo credit: NASA/Kim Shiflett