190722-N-NT795-584 SAN DIEGO (July 22, 2019) Lt. Ralph Francisco, range safety officer assigned to Coastal Riverine (CRS) 3, visually scans the horizon aboard a Mark VI patrol boat during a live-fire exercise as part of unit level training provided by Coastal Riverine Group (CRG) 1's 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 in the coastal and inland waterways. (U.S. Navy photo by Chief Boatswain’s Mate Nelson Doromal Jr./Released)