In bay 3 of the Orbiter Processing Facility, the thermal protection system tiles on Atlantis are undergoing post-flight inspection. Atlantis returned from mission STS-115 on Sept. 21 and is being prepared for her next mission, STS-117. The mission will be the 21st to the International Space Station and construction flight 13A. The mission payload comprises the starboard arrays 3 and 4. Launch is scheduled for no earlier than Feb. 22, 2007. Photo credit: NASA/Jack Pfaller