190301-N-GA672-1001 GULF OF ADEN (March 1, 2019) An MH-60R Sea Hawk helicopter assigned to Helicopter Maritime Strike Squadron (HSM) 37 embarked aboard the guided-missile destroyer USS Chung-Hoon (DDG 93) hovers over a merchant ship during a medical evacuation training drill in the Gulf of Aden, March 1, 2019, during Lucky Mariner 19. Lucky Mariner is an annual exercise led by Naval Coordination and Guidance for Shipping (NCAGS) alongside shipping and coalition maritime forces designed to exercise command and control and provide standardized direction during periods of increased tension to protect the free flow of commerce. (U.S. Navy photo by Intelligence Specialist 3rd Class Zachary Cervantes/Released)