180813-N-WO404-321 BLACK SEA (Aug. 13, 2018) Bulgarian Navy patrol boats engage in a swarming exercise with the Arleigh Burke-class guided-missile destroyer USS Carney (DDG 64) in the Black Sea. U.S. 6th Fleet, headquartered in Naples, Italy, conducts the full spectrum of joint and naval operations, often in concert with allied and interagency partners, in order to advance U.S. national interests, security and stability in Europe and Africa. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jonathan Nelson/Released)