171011-N-QR145-045 SOUDA BAY, Greece (Oct. 11, 2017) Fire Controlman 2nd Class Robert Kaperak, left, and Interior Communications Technician 2nd Class Lester Sheff man a .50-caliber machine gun aboard the Arleigh Burke-class guided-missile destroyer USS Porter (DDG 78) during anti-terrorism force protection training. Porter is forward-deployed to Rota, Spain, 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 3rd Class Krystina Coffey/Released)