NASA astronauts Nicole Mann and Barry “Butch” Wilmore and Boeing astronaut Chris Ferguson review International Space Station training at NASA’s Johnson Space Center in Houston, Texas. Mann and Ferguson are assigned to Boeing’s Crew Flight Test, the first flight of the company’s CST-100 Starliner spacecraft. The Crew Flight Test is part of NASA’s Commercial Crew Program, which is working with Boeing to return human spaceflight launches to the space station from U.S. soil.