This aerial view of NASA's Kennedy Space Center shows the observation gantry which has upper right.

This aerial view of NASA's Kennedy Space Center shows the observation gantry, which has a clear view of Launch Pad 39B (upper left) and Launch Pad 39A (upper right). Space shuttle Endeavour is on pad 39B, prepared for liftoff in the unlikely event that a rescue mission is necessary during space shuttle Atlantis' STS-125 mission to service NASA's Hubble Space Telescope. Photo credit: NASA/Kim Shiflett