191010-N-NT795-174 SAN DIEGO (Oct. 10, 2019) Engineman 2nd Class Jacob Tracey, assigned to Coastal Riverine Squadron (CRS) 3, mans a M240 machine gun aboard MKVI patrol boat during 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 operation in the coastal and inland waterways. (U.S. Navy photo by Chief Boatswain’s Mate Nelson Doromal Jr./Released)