190625-N-DE019-0012 PACIFIC OCEAN (June 25, 2019) Aviation Structural Mechanic 3rd Class Shawn Prevatt, from Norwood, Mass., measures a nylon cord attached to a MK-1 life preserver aboard the aircraft carrier USS Nimitz (CVN 68). Nimitz is currently underway conducting routine operations. (U.S. Navy photo by Mass Communication Specialist Seaman Edwin Salvatierra/Released)