This is a view of the underside of Endeavour taken after its landing on runway 15 at NASA's Kennedy Space Center.

This is a view of the underside of Endeavour taken after its landing on runway 15 at NASA's Kennedy Space Center. 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