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KENNEDY SPACE CENTER, FLA. -- The payload canister on its transporter leaves the Vertical Processing Facility. Inside the canister are the S5 truss, SPACEHAB module and external stowage platform 3, the payload for mission STS-118. They will be placed in the payload bay on Space Shuttle Endeavour when it arrives at the pad. The mission will be Endeavour's 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. Space Shuttle Endeavour is targeted for launch on Aug. 7 from Launch Pad 39A. Photo credit: NASA/Kim Shiflett