STS-118 Mission Specialists Barbara R. Morgan and Dave Williams relax their launch and entry suits.

After practicing emergency egress from Launch Pad 39A, STS-118 Mission Specialists Barbara R. Morgan and Dave Williams relax their launch and entry suits. Morgan joined NASA's Teacher in Space program in 1985 and was selected as an astronaut in 1998. Williams represents the Canadian Space Agency. The crew is concluding the terminal countdown demonstration test. The STS-118 mission on Space Shuttle Endeavour is the 22nd flight to the International Space Station and 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