181027-N-YB023-0160 OAK HARBOR, Wash. (Oct. 27, 2018) A Sailor assigned to Explosive Ordnance Disposal Mobile Unit (EODMU) 1, Platoon 122, signals to the boat crew before a mine countermeasure dive in Puget Sound. The mine countermeasure operation is a joint maritime homeland defense exercise that is part of the larger Vigilant Shield 19, an annual joint homeland defense exercise to hone interoperability and cooperation skills between Canada and the United States. (U.S. Navy photo by Mass Communication Specialist 3rd Class Clemente Lynch/Released)