In the transfer aisle of the Vehicle Assembly Building workers are securing the sling attachment of the overhead crane.

In the transfer aisle of the Vehicle Assembly Building, workers are securing the sling attachment of the overhead crane that will lift the orbiter Atlantis into high bay 3. After Atlantis is lifted and moved into the high bay, the orbiter will be lowered and mated with the external tank and solid rocket boosters already stacked on the mobile launcher platform. Atlantis' launch window begins Aug. 28. During its 11-day mission to the International Space Station, the STS-115 crew of six astronauts will install the Port 3/4 truss segment with its two large solar arrays. Photo credit: NASA/George Shelton