Administrator William Gerstenmaier get a closer look at the damaged tiles on the underside of Endeavour.

On the Shuttle Landing Facility at NASA's Kennedy Space Center, Mission Launch Integration Director Leroy Cain, NASA Administrator Mike Griffin and Associate Administrator for NASA Space Operations William Gerstenmaier get a closer look at the damaged tiles on the underside of Endeavour. The damage to the tiles occurred from a piece of foam on the external tank during launch of Space Shuttle Endeavour on mission STS-118 on Aug. 8. After extensive engineering analysis of such images and testing on the ground, the Mission Management Team decided the tile did not pose a risk to the crew during re-entry. Endeavour landed safely at 12:32 p.m. EDT at NASA's Kennedy Space Center after a 13-day mission to the International Space Station. The STS-118 mission installed a new gyroscope, an external spare parts platform and another truss segment to the expanding station. Photo credit: NASA/Kim Shiflett