191211-N-NT795-002 SAN DIEGO (Dec. 11, 2019) Sailors assigned to Coastal Riverine Squadron (CRS) 3 operate underway aboard the Mark VI patrol boat in San Diego Bay during a maritime infrastructure protection training exercise 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 in the coastal and inland waterways. (U.S. Navy photo by Chief Boatswain’s Mate Nelson Doromal Jr./Released)