At NASA's Kennedy Space Center the payload canister atop its transporter reaches the top of Launch Pad 39A.

At NASA's Kennedy Space Center, the payload canister atop its transporter reaches the top of Launch Pad 39A. The canister will be positioned under the payload changeout room, on the rotating service structure at left. The canister contains the Columbus Lab module and integrated cargo carrier-lite payloads for space shuttle Atlantis on mission STS-122. They will be transferred into the payload changeout room on the pad. Atlantis is targeted to launch on Dec. 6. Photo credit: NASA/Dimitri Gerondidakis