John Vollmer, vice president and program manager, Boeing Commercial Crew Program, participates in a prelaunch briefing for Boeing’s Orbital Flight Test-2 (OFT-2) at the agency’s Kennedy Space Center in Florida, July 27, 2021. Boeing’s CST-100 Starliner spacecraft will launch atop a United Launch Alliance Atlas V rocket from Space Launch Complex-41 at Cape Canaveral Space Force Station. The uncrewed OFT-2 will be the Starliner’s second flight for NASA’s Commercial Crew Program.