190228-N-KA046-0223 ROTA, Spain (Feb. 28, 2019) Sonar Technician (Surface) 1st Class Hector Herrera, assigned to the Arleigh Burke-class guided-missile destroyer USS Porter (DDG 78), secures a perimeter with a simulated weapon while first responders treat simulated watch stander casualties during an anti-terrorism force protection drill at Naval Station Rota, Spain, Feb. 28, 2019. Porter, forward-deployed to Rota, Spain, is on its sixth 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 James R. Turner/Released)