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KENNEDY SPACE CENTER, Fla. -- Inside an M-113 armored personnel carrier, the STS-118 crew gets instructions on its use for emergency exit procedures from Launch Pad 39A. At left is Mission Specialist Dave Williams, who represents the Canadian Space Agency. At right are (back to front) Pilot Charlie Hobaugh and Mission Specialists Alvin Drew and Tracy Caldwell. TCDT activities include the M-113 training, payload familiarization, emergency egress training at the pad and a simulated launch countdown. The STS-118 payload aboard Space Shuttle Endeavour includes the S5 truss, a SPACEHAB module and external stowage platform 3. The mission is the 22nd flight to the International Space Station and is targeted for launch on Aug.7. NASA/George Shelton