191001-N-NT795-250 SAN DIEGO (Oct. 1, 2019) Sailors assigned to Coastal Riverine Squadron 3 conduct unit level training aboard a Mark VI patrol boat off the coast of San Diego. The Coastal Riverine Force is a core Navy capability that provides port and harbor security, high value asset security, and maritime security operation in the coastal and inland waterways. (U.S. Navy photo by Chief Boatswain’s Mate Nelson Doromal Jr./Released)