180223-N-MT837-0094 SOUTH CHINA SEA (Feb. 23, 2018) Sailors perform preflight checks on an MH-60S Sea Hawk helicopter assigned to the “Black Knights” of Helicopter Sea Combat Squadron (HSC) 4 on the flight deck of Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). The Carl Vinson Strike Group is currently operating in the Western Pacific as part of a regularly scheduled deployment. (U.S. Navy photo by Mass Communication Specialist 3rd Class Dylan M. Kinee/Released)