190627-N-NT795-828 SAN DIEGO (June 27, 2019) Quartermaster 3rd Class Jonathon Williams, assigned to Coastal Riverine Squadron 3, fires a M2A1 .50-caliber machine gun aboard a Mark VI patrol boat during a simulated small boat attack as part of unit level training provided by Coastal Riverine Group (CRG) 1 Training and Evaluation Unit. The Coastal Riverine Force is a core Navy capability that provides port and harbor security, high value asset security, and maritime security operations in the coastal and inland waterways. (U.S. Navy photo by Chief Boatswain’s Mate Nelson Doromal Jr./Released)