PACIFIC OCEAN (March 6, 2021) A civilian AS332 Super Puma, front, and a U.S. Marine Corps CH-53 Sea Stallion conduct the first vertical replenishment-at-sea of an F-135 engine power module load simulator from the dry cargo and ammunition ship USNS Richard E. Byrd (T-AKE 4) to the Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). The exercise uses mock weight measured to the same capacity as the F135 engine power module to verify the capability of supplying the parts necessary to support future joint strike fighter deployments. Carl Vinson is currently underway in the Pacific Ocean conducting routine maritime operations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Olympia O. McCoy)