The mission STS-116 crew poses in the White Room on Launch Pad 39B.

The mission STS-116 crew poses in the White Room on Launch Pad 39B. Clockwise from left are Mission Specialists Robert Curbeam and Sunita Williams, Pilot William Oefelein, Mission Specialist Joan Higginbotham, Commander Mark Polansky, and Mission Specialists Christer Fuglesang and Nicholas Patrick. Fuglesang represents the European Space Agency. The mission crew is at KSC for the TCDT, which includes a simulated launch countdown. 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