160506-N-FQ994-191 MEDITERRANEAN SEA (May 6, 2016) Firefighters aboard USS Porter (DDG 78) respond to a simulated class-A fire aboard the ship during a general quarters training exercise May 6, 2016. Porter, an Arleigh Burke-class guided-missile destroyer, forward-deployed to Rota, Spain, is conducting a routine patrol 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 3rd Class Robert S. Price/Released)