The Rotating Service Structure begins rolling back on Launch Pad 39B to reveal the Space Shuttle Atlantis on top of the Mobile Launcher Platform.

Under a cloud-streaked sky, the Rotating Service Structure (RSS) begins rolling back on Launch Pad 39B to reveal the Space Shuttle Atlantis on top of the Mobile Launcher Platform. Atlantis is ready for launch of mission STS-106 at 8:45 a.m. EDT on Sept. 8. Atlantis carries supplies to prepare the Russian Zvezda living quarters on the International Space Station for the first long-duration crew. The crew will also be transferring supplies from the Russian Progress resupply ship already docked to the aft of Zvezda. The fourth U.S. launch for the Space Station, the mission is expected to last 10 days, 19 hours and 9 minutes, landing at KSC 4:59 a.m. EDT on Sept. 19