171123-N-UK248-239 ARABIAN GULF (Nov. 23, 2017) Gunner’s Mate 1st Class Benjamin Schreiner, assigned to the Arleigh Burke-class guided-missile destroyer USS Hopper (DDG 70), explain operations of a MK-38 mod 2, 25 mm gun mount to Secretary of the Navy Richard V. Spencer and his wife Sarah Pauline Spencer. Hopper is deployed to the U.S. 5th Fleet area of operations in support of maritime security operations to reassure allies and partners and preserve the freedom of navigation and the free flow of commerce in the region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Kristina Young/Released)