170418-N-NT795-688 SAN DIEGO (April 18, 2017) A Sailor assigned to Coastal Riverine Squadron (CRS) 1 fires an M203 37 mm flare launcher during a live-fire exercise conducted by Coastal Riverine Group 1's Training and Evaluation Unit. The Coastal Riverine Force is a core Navy capability that provides high value assets protection and maritime security operations in coastal and inland waterways. (U.S. Navy photo by Chief Boatswain’s Mate Nelson Doromal/Released)