180426-N-BV658-1044 GUAM (april 26, 2018) Chief Gunner’s Mate Geoffrey Martin, right, assigned to Coastal Riverine Squadron (CRS) 4, Det. Guam, gives a tour of a Mark VI patrol boat to Vice Adm. Bill Merz at Apra Harbor, Guam, April 26, 2018. CRS-4, Det. Guam is assigned to Commander, Task Force 75, the primary expeditionary task force responsible for the planning and execution of coastal riverine operations, explosive ordnance disposal, diving engineering and construction, and underwater construction in the U.S. 7th Fleet area of operations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Kryzentia Richards/Released)