KENNEDY SPACE CENTER, FLA. -- The STS-116 crew eagerly walks to the Astrovan that will take them to Launch Pad 39B and the simulated countdown. The crew is practicing for launch with a simulation of activities, from crew breakfast and suit-up to countdown in the orbiter. From left are Mission Specialists Joan Higginbotham, Sunita Williams and Nicholas Patrick; Commander Mark Polansky; Mission Specialists Robert Curbeam and Christer Fuglesang; and Pilot William Oefelein. The STS-116 mission is No. 20 to the International Space Station and construction flight 12A.1. The mission payload is the SPACEHAB module, the P5 integrated truss structure and other key components. Launch is scheduled for no earlier than Dec. 7. Photo credit: NASA/Kim Shiflett