NASA announces the nine astronauts selected for commercial crew flight assignments on the crew test flights and first operational missions for Boeing's CST-100 Starliner and SpaceX's Crew Dragon on Aug. 3, 2018, at the agency's Johnson Space Center in Houston. Seated in front, from left, are Bob Behnken and Doug Hurley. They are assigned to the first test flight of SpaceX's Crew Dragon. Seated in back, from left, are Victor Glover and Mike Hopkins. They are assigned to fly on the first operational mission of SpaceX's Crew Dragon.