CAPE CANAVERAL, Fla. – At NASA's Kennedy Space Center in Florida, the STS-119 crew members pause in front of the Astrovan before boarding it to head to Launch Pad 39A for a simulated launch countdown. From left are Mission Specialists Koichi Wakata, John Phillips, Richard Arnold, Steve Swanson and Joseph Acaba, Pilot Tony Antonelli and Commander Lee Archambault. 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