The hatch opens on a United Launch Alliance barge, known as the RocketShip, revealing a Delta IV Heavy booster May 4, 2020, at Vandenberg Air Force Base, Calif. The barge docked at Vandenberg AFB to offload the final Delta IV Heavy booster for an upcoming launch scheduled to occur later this year. The barge operation is a vital first step to executing the mission of assured access to space. (U.S. Air Force photo by Senior Airman Aubree Owens)