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KENNEDY SPACE CENTER, Fla. -- In the slidewire basket bunker area of Launch Pad 39A, STS-118 Mission Specialist Tracy Caldwell reacts to the waiting press during a media interview before the crew's morning training activities in the terminal countdown demonstration test, or TCDT. Those activities include M-113 training, payload familiarization, the emergency egress training at the pad and a simulated launch countdown. The mission is the 22nd flight to the International Space Station and Space Shuttle Endeavour will carry a payload including the S5 truss, a SPACEHAB module and external stowage platform 3. STS-118 is targeted for launch on Aug. 7. Photo credit: NASA/Ken Thornsley