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KENNEDY SPACE CENTER, FLA. -- STS-123 Commander Dominic Gorie heads across the NASA Kennedy Space Center's Shuttle Landing Facility toward a waiting plane for his return to Houston. He and the other STS-123 crew members took part in a terminal countdown demonstration test, or TCDT, in preparation for the launch of space shuttle Endeavour scheduled on March 11. The TCDT enables astronauts and ground crews to participate in various countdown activities, including equipment familiarization and emergency egress training. On the STS-123 mission, Endeavour and its crew will deliver the first section of the Japan Aerospace Exploration Agency's Kibo laboratory and the Canadian Space Agency's two-armed robotic system, Dextre Photo credit: NASA/Kim Shiflett