STS-123 Mission Specialists Mike Foreman Takao Doi and Garrett Reisman are to participate in a simulated launch countdown.

(From top) STS-123 Mission Specialists Mike Foreman, Takao Doi and Garrett Reisman are in their seats in space shuttle Endeavour to participate in a simulated launch countdown. The countdown is the culmination of the terminal countdown demonstration test, or TCDT. The TCDT provides astronauts and ground crews with an opportunity to participate in various countdown activities, including equipment familiarization and emergency egress training. Endeavour is targeted to launch at 2:28 a.m. EDT March 11 on the 16-day STS-123 mission to the International Space Station. 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