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KENNEDY SPACE CENTER, FLA. -- In high bay 1 of the Vehicle Assembly Building, platforms surround Endeavour to complete stacking of the orbiter, external tank and solid rocket boosters, barely visible behind the platforms. Endeavour will be launched on mission STS-118, its first flight in more than four years. The shuttle has undergone extensive modifications, including the addition of safety upgrades already added to shuttles Discovery and Atlantis. Endeavour also features new hardware, such as the Station-to-Shuttle Power Transfer System that will allow the docked shuttle to draw electrical power from the station and extend its visits to the orbiting lab. Endeavour is targeted for launch on Aug. 7. Photo credit: NASA/George Shelton