Thomas Reiter prepares to leap from the slidewire basket during training on emergency egress procedures from the launch pad.

STS-121 Mission Specialist Thomas Reiter prepares to leap from the slidewire basket during training on emergency egress procedures from the launch pad. Above him is Mission Specialist Piers Sellers; at lower left is Mission Specialist Stephanie Wilson. The crew is at Kennedy for Terminal Countdown Demonstration Test activities, including emergency egress training from the pad. They will also suit up in their orange flight suits for a simulated countdown to launch. Discovery is designated to launch July 1 on mission STS-121. It will carry supplies to the International Space Station. Photo credit: NASA/Kim Shiflett