171107-N-MT837-0071 PACIFIC OCEAN (Nov. 7, 2017) Sailors assigned to the “Black Knights” of Helicopter Sea Combat Squadron (HSC) 4 work on a MH-60S Sea Hawk helicopter on the flight deck of the Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). Carl Vinson is participating in a sustainment training exercise in preparation for an upcoming deployment. (U.S. Navy photo by Mass Communication Specialist Seaman Dylan M. Kinee/Released)