NASA astronauts Nicole Mann, Michael Fincke, Suni Williams, Josh Cassada, and Eric Boe pose for a picture after a United Launch Alliance Atlas V rocket with Boeing’s CST-100 Starliner spacecraft onboard was rollout out to the launch pad at Space Launch Complex 41 ahead of the Orbital Flight Test mission, Wednesday, Dec. 18, 2019.

Photo credit: NASA/Johnson Space Center

Please note: Images sometimes cropped to fit the photo format.