151104-N-AX546-009 MEDITERRANEAN SEA (Nov. 4, 2015) USS Porter (DDG 78) transits the Strait of Gibraltar Nov. 4, 2015. Porter, an Arleigh Burke-class guided-missile destroyer, forward-deployed to Rota, Spain, is on routine patrol conducting naval operations in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy photo by Mass Communication Specialist 1st Class Sean Spratt/Released)