On NASA Kennedy Space Center's Launch Pad 39A two workers keep watch as the second payload bay door closes.

On NASA Kennedy Space Center's Launch Pad 39A, two workers keep watch as the second payload bay door closes on space shuttle Endeavour. Still seen, at the bottom of the payload bay, is the first section of the Japan Aerospace Exploration Agency's Kibo laboratory, the Experiment Logistics Module Pressurized Section, or ELM-PS. Endeavour is targeted to launch March 11 at 2:28 a.m. EDT on the 16-day STS-123 mission to the International Space Station. Endeavour and its crew will deliver the ELM-PS and the Canadian Space Agency's two-armed robotic system, Dextre. Photo credit: NASA/Dimitri Gerondidakis