PLYMOUTH, United Kingdom (April 30, 2021) Chief Fire Controlman Jacob Degroot, stationed aboard the Arleigh Burke-class guided-missile destroyer USS Ross (DDG 71), takes cover aboard the ship after hearing gunfire during an anti-terrorism force protection exercise during Flag Officer Sea Training (FOST), April 30, 2021. FOST is a three-week exercise led by the Royal Navy that tests the ship's warfighting ability. Ross, forward-deployed to Rota, Spain, is on 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 and Africa. (U.S. Navy photo by Mass Communication Specialist 2nd Class Claire DuBois)