Bay 1 the orbiter boom sensor system is lowered into Atlantis' payload bay for installation.

In Orbiter Processing Facility bay 1 at NASA's Kennedy Space Center, the orbiter boom sensor system is lowered into Atlantis' payload bay for installation. The 50-foot-long boom attaches to the shuttle arm and is one of the new safety measures added prior to Return to Flight last year. It equips the orbiter with cameras and laser systems to inspect the shuttle's heat shield while in space. Atlantis is scheduled to launch on mission STS-115 no earlier than Aug. 28. Photo credit: NASA/Jim Grossmann