On Launch Pad 39B a worker monitors data during evaluation of systems at the pad after a lightning strike.

On Launch Pad 39B, a worker monitors data during evaluation of systems at the pad after a lightning strike Aug. 25. Preparations continue on the pad for launch of Atlantis on mission STS-115 as early as Aug. 29. However, preparations are also underway for a rollback of Atlantis to the Vehicle Assembly Building due to Hurricane Ernesto. The rollback will be determined by the mission management team based on information about Hurricane Ernesto and its path through Florida. Atlantis has been poised on Launch Pad 39B for liftoff on mission STS-115 to the International Space Station to deliver the P3/P4 truss segment. Photo credit: NASA/Jack Pfaller