ATLANTIC OCEAN (Aug. 15, 2017) Fire Controlman 2nd Class John Beckon, from Pasedena, California, changes the barrel on a .50-caliber machine gun during a crew served weapons course aboard the Arleigh Burke-class guided-missile destroyer USS Donald Cook (DDG 75), Aug. 15, 2017.
Donald Cook, forward-deployed to Rota, Spain, is conducting its 6th patrol in the U.S. 6th Fleet area of operations. (U.S. Navy photo by Mass Communication Specialist 1st Class Theron J. Godbold /Released). Original public domain image from Flickr