CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, STS-128 crew members get instructions about using slidewire baskets for emergency exit from the fixed service structure on Launch Pad 39A. From left are Mission Specialist Patrick Forrester, Commander Rick Sturckow, Mission Specialists Nicole Stott and Jose Hernandez, and Pilot Kevin Ford. 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