NASA's SpaceX Crew-8 crewmates Matthew Dominick, Michael Barratt, and Jeanette Epps, and Roscosmos cosmonaut Alexander Grebenkin take their first steps outside from the Neil A. Armstrong Operations and Checkout Building to head to Space Launch Complex 39A at Kennedy Space Center in Florida for liftoff to the International Space Station at 10:53 p.m. EST Sunday, March 3, 2024.