190502-N-QR145-229 MEDITERRANEAN SEA (May 2, 2019) Fire Controlman 2nd Class Francisco Cacho cleans the barrel of a Mark 45 5-inch gun aboard the Arleigh Burke-class guided-missile destroyer USS Ross (DDG 71) in the Mediterranean Sea, May 2, 2019. Ross, forward-deployed to Rota, Spain, is on its eighth patrol in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe and Africa. (U.S. Navy photo by Mass Communication Specialist 2nd Class Krystina Coffey/Released)