170907-N-QR145-063 MEDITERRANEAN SEA (Sept. 7, 2017) Sailors respond to a simulated casualty by erecting metal shoring during a general quarters drill aboard the Arleigh Burke-class guided-missile destroyer USS Porter (DDG 78). 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)