John Elbon discusses the CST-100 spacecraft during a ceremony inside Orbiter Processing Facility 3 at NASA's Kennedy Space Center.

John Elbon, The Boeing Company's vice president general manager of Boeing Space Systems, discusses the CST-100 spacecraft during a ceremony inside Orbiter Processing Facility 3 at NASA's Kennedy Space Center in Florida. Looking on are, from left, U.S. Sen. Bill Nelson of Florida, 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