English: CAPE CANAVERAL, Fla. - At Launch Pad 39A at NASA's Kennedy Space Center in Florida, the crew members of space shuttle Discovery's STS-131 mission pose for a group portrait in front of Discovery's external fuel tank. From left are Mission Specialists Dorothy Metcalf-Lindenburger and Stephanie Wilson; Pilot James P. Dutton Jr.; Commander Alan Poindexter; and Mission Specialists Naoko Yamazaki of the Japan Aerospace Exploration Agency, Rick Mastracchio and Clayton Anderson. Behind Mastracchio is the tip of one of Discovery's solid rocket boosters. The crew members of space shuttle Discovery's STS-131 mission are participating in 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.