Discovery Shuttle Crew Arrives For Terminal Countdown Demonstration Test

NASA's STS-131 astronauts, Commander Alan Poindexter (R-L), Pilot James P. Dutton Jr., mission specialists Rick Mastracchio, Dorothy Metcalf-Lindenburger, Stephanie Wilson, Japan Aerospace Exploration Agency astronaut Naoko Yamazaki and NASA astronaut Clayton Anderson walk out of the operations and checkout building at Kennedy Space CenterMarch 5, 2010, in Cape Canaveral. The astronauts were participating in the Terminal Countdown Demonstration Test, a full dress rehearsal for their upcoming launch aboard Space Shuttle Discovery.
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