Crew members practice getting out of a slidewire basket that can be used for emergency exit at NASA's Kennedy Space Center.

STS-128 crew members practice getting out of a slidewire basket that can be used for emergency exit from Launch Pad 39A at NASA's Kennedy Space Center in Florida. From left are Mission Specialist Nicole Stott, Pilot Kevin Ford and Mission Specialist Jose Hernandez. The crew is at Kennedy for a launch dress rehearsal called the terminal countdown demonstration test, or TCDT, which includes emergency exit training and equipment familiarization, as well as a simulated launch countdown. Discovery will deliver 33,000 pounds of equipment to the station, including science and storage racks, a freezer to store research samples, a new sleeping compartment and the COLBERT treadmill. Photo credit: NASA/Kim Shiflett