Practicing emergency egress from Launch Pad 39A crew members climb into a slidewire basket.

Practicing emergency egress from Launch Pad 39A, STS-118 crew members climb into a slidewire basket. They are taking part in terminal countdown demonstration test activities that included a simulated launch countdown. The crew comprises Commander Scott Kelly, Pilot Charlie Hobaugh and Mission Specialists Dave Williams, Barbara R. Morgan, Rick Mastracchio, Tracy Caldwell and Alvin Drew. Williams represents the Canadian Space Agency. Morgan joined NASA's Teacher in Space program in 1985 and was selected as an astronaut in 1998. 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