Workers prepare the orbiter boom sensor system for installation on the starboard side of Atlantis's payload bay for mission STS-117.

In the Orbiter Processing Facility's bay 1, workers prepare the orbiter boom sensor system for installation on the starboard side of Atlantis's payload bay for mission STS-117. The 50-foot-long boom attaches to the shuttle arm and provides equipment to inspect the shuttle's heat shield while in space. It contains an intensified television camera (ITVC) and a laser dynamic range imager, which are mounted on a pan and tilt unit, and a laser camera system (LCS) mounted on a stationary bracket. Mission STS-117 will carry the S3/S4 arrays for installation on the International Space Station. Launch of Space Shuttle Atlantis is scheduled for March. Photo credit: NASA/Jack Pfaller