STS-128 Mission Specialist Jose Hernandez listens to a question from the media during a session near Launch Pad 39A.

At NASA's Kennedy Space Center in Florida, STS-128 Mission Specialist Jose Hernandez listens to a question from the media during a question-and-answer session near Launch Pad 39A. 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