Bill Nelson discusses The Boeing Company's CST-100 spacecraft during a ceremony at NASA's Kennedy Space Center.

U.S. Sen. Bill Nelson of Florida discusses The Boeing Company's CST-100 spacecraft during a ceremony inside Orbiter Processing Facility 3 at NASA's Kennedy Space Center in Florida. Looking on are, from left, John Elbon, Boeing's vice president general manager of Boeing Space Systems,, John Mulholland, Boeing's program manager for the CST-100, and Chris Ferguson, Boeing's director of Crew and Mission Operations. Photo credit: NASA/Kim Shiflett