A transport truck moves a United Launch Alliance (ULA) two-engine Centaur upper stage from the company’s Mariner ship that just arrived at Port Canaveral in Florida. The Centaur will be transported to the Atlas Spaceflight Operations Center at Cape Canaveral Air Force Station for preliminary checkouts. Mounted atop a ULA Atlas V rocket, the Centaur will help launch a Boeing CST-100 Starliner spacecraft on an uncrewed Orbital Flight Test from Space Launch Complex 41 at the Cape. NASA’s Commercial Crew Program will return human spaceflight launches to U.S. soil, providing safe, reliable and cost-effective access to low-Earth orbit on systems that meet our safety and mission requirements.