180216-N-GC347-196 ATLANTIC OCEAN (Feb. 16, 2017) Naval Aircrewman (Helicopter) 3rd Class Heath Stone, assigned to the "Dragon Slayers" of Helicopter Sea Combat Squadron (HSC) 11, mans a .50-caliber machine gun in an MH-60S Sea Hawk helicopter during flight operations aboard the aircraft carrier USS Harry S. Truman (CVN 75) strike group. Truman is underway for composite training unit exercise (COMPTUEX), which evaluates the strike group's ability as a whole to carry out sustained combat operations from the sea, ultimately certifying the Harry S. Truman Carrier Strike Group for deployment. (U.S. Navy photo by Mass Communication Specialist 2nd Class Scott Swofford/Released)