CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, the STS-119 crew members head for the Astrovan and a ride to Launch Pad 39A for a simulated launch countdown. Commander Lee Archambault leads the way; seen behind him, on the left, are Mission Specialists John Phillips and Steve Swanson and Pilot Tony Antonelli. In the back, from center, are Mission Specialists Koichi Wakata, Richard Arnold and Joseph Acaba. The astronauts are at Kennedy to prepare for launch through Terminal Countdown Demonstration Test activities. The TCDT includes equipment familiarization and emergency egress training. The crew is targeted to launch on the STS-119 mission Feb. 12 on space shuttle Discovery. During the 14-day mission, the crew will install the S6 truss segment and solar arrays to the starboard side of the International Space Station, completing the station's truss, or backbone. Photo credit: NASA/Kim Shiflett