At NASA's Kennedy Space Center Rick Sturckow answers questions from the media near Launch Pad 39A.

At NASA's Kennedy Space Center in Florida, STS-128 Commander Rick Sturckow (left) answers questions from the media near Launch Pad 39A . Other crew members next to him are Pilot Kevin Ford, and Mission Specialists Patrick Forrester, Jose Hernandez, John "Danny" Olivas, Christer Fuglesang and Nicole Stott. Fuglesang represents the European Space Agency. 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