Officials from NASA, Boeing, United Launch Alliance and the U.S. Air Force 45th Weather Squadron participate in a prelaunch briefing for Boeing’s Orbital Flight Test at the agency’s Kennedy Space Center in Florida, Dec. 17, 2019. From left are John Elbon, chief operating officer, United Launch Alliance; Joel Montalbano, deputy manager, International Space Station Program; Pat Forrester, Astronaut Office chief, Johnson Space Center; and Will Ulrich, launch weather officer, 45th Weather Squadron. Boeing’s CST-100 Starliner spacecraft will launch atop a United Launch Alliance Atlas V rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station. The uncrewed Orbital Flight Test will be the Starliner’s first flight to the International Space Station for NASA’s Commercial Crew Program.