CAPE CANAVERAL, Fla. - On Launch Pad 39A at NASA's Kennedy Space Center, the members of space shuttle Discovery's STS-131 crew are instructed on emergency exit procedures on a brisk Florida morning. From left, in the blue suits, are Mission Specialists Dorothy Metcalf-Lindenburger and Naoko Yamazaki of the Japan Aerospace Exploration Agency; Pilot James P. Dutton Jr.; and Mission Specialist Clayton Anderson. The crew members of space shuttle Discovery's STS-131 mission are at Kennedy for training related to their launch dress rehearsal, the Terminal Countdown Demonstration Test. The seven-member crew will deliver the multi-purpose logistics module Leonardo, filled with resupply stowage platforms and racks, to the International Space Station aboard Discovery. Targeted for launch on April 5, STS-131 will be the 33rd shuttle mission to the station and the 131st shuttle mission overall. For information on the STS-131 mission and crew, visit http:__www.nasa.gov_mission_pages_shuttle_shuttlemissions_sts131_index.html. Photo credit: NASA_Kim Shiflett