A worker checks the progress of one of the corner bolts of the crawler-transporter that support the mobile launcher platform.

On Launch Pad 39B, a worker checks the progress of one of the corner bolts of the crawler-transporter that support the mobile launcher platform during transport. Space Shuttle Atlantis, which sits on top of the mobile launcher platform, will be rolled back to the Vehicle Assembly Building. First motion off the pad was at 10:04 a.m. EDT. The rollback is a safety precaution as the area waits for the arrival of Tropical Storm Ernesto. The storm is forecast to be bringing 58-mph to 70-mph winds in the next 24 hours. The shuttle will be moved into high bay 2, on the southwest side of the VAB, for protection from the storm. Photo credit: NASA/Jack Pfaller