170224-N-KP948-246 PLYMOUTH, United Kingdom (Feb. 24, 2017) Sailors assigned to the Arleigh Burke-class guided-missile destroyer USS Donald Cook (DDG 75) participate in an anti-terrorism force protection drill during flag officer sea training. Donald Cook is forward-deployed to Rota, Spain, conducting naval operations 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 3rd Class Alyssa Weeks/Released)