STS 118 crew members confer with a technician about the payloads installed in Space Shuttle Endeavour.

STS-118 crew members confer with a technician about the payloads installed in Space Shuttle Endeavour. Seen here are Mission Specialists Dave Williams (center), who represents the Canadian Space Agency, and Rick Mastracchio (right). The STS-118 crew has been at Kennedy for terminal countdown demonstration test activities that also include M-113 training, 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/George Shelton