During a countdown dress rehearsal for NASA’s SpaceX Crew-3 mission, the astronauts exit the Neil A. Armstrong Operations and Checkout Building and work their way to the Tesla vehicles for the trip to Launch Complex 39A at the agency’s Kennedy Space Center in Florida on Oct. 28, 2021. NASA astronauts Raja Chari, commander; Tom Marshburn, pilot; and Kayla Barron, mission specialist, along with Matthias Maurer, with the European Space Agency, and also a mission specialist, will launch aboard the Crew Dragon atop the Falcon 9 to the International Space Station. Launch is targeted for no earlier than Nov. 6 at 11:36 p.m. EDT from Launch Complex 39A. Crew-3 is the third crew rotation flight to the space station for NASA’s Commercial Crew Program, and the first flight of a new Crew Dragon spacecraft.