Space Shuttle Atlantis mounted on a mobile launch platform atop a crawler transporter passes through the gate to Launch Pad 39A.

Space Shuttle Atlantis, mounted on a mobile launch platform atop a crawler transporter, passes through the gate to Launch Pad 39A. The flag is flying at half mast in recognition of Peace Officers Memorial Day as authorized by the President. First motion of the shuttle out of the Vehicle Assembly Building was at 5:02 a.m. EDT. In late February, while Atlantis was on the launch pad, Atlantis' external tank received hail damage during a severe thunderstorm that passed through the Kennedy Space Center Launch Complex 39 area. The hail caused visible divots in the giant tank's foam insulation, as well as minor surface damage to about 26 heat shield tiles on the shuttle's left wing. The shuttle was returned to the VAB for repairs. The launch of Space Shuttle Atlantis on mission STS-117 is now targeted for June 8. A flight readiness review will be held on May 30 and 31. Photo credit: NASA/Jim Grossmann