180218-N-KA046-0076 VARNA, Bulgaria (Feb. 18, 2018) Ship's Serviceman Seaman Darnell Thomas mans a .50-caliber machine gun aboard the Arleigh Burke-class guided-missile destroyer USS Carney (DDG 64), during mooring operations in Varna, Bulgaria, Feb. 18, 2018. Carney, forward-deployed to Rota, Spain, is on its fourth patrol in the U.S. 6th Fleet area of operations in support of regional allies and partners, and U.S. national security interests in Europe. (U.S. Navy photo by Mass Communication Specialist 2nd Class James R. Turner/Released)