180419-N-NT795-673 SAN DIEGO (April 19, 2018) Sailors assigned to Coastal Riverine Squadron (CRS) 3 conducts maritime infrastructure protection training in Mark VI patrol boats during unit level training provided by Coastal Riverine Group (CRG) 1 Training and Evaluation Unit. CRG-1 provides a core capability to defend designated high value assets throughout the green and blue-water environment and providing deployable adaptive force packages worldwide in an integrated, joint and combined theater of operations. (U.S. Navy photo by Chief Boatswain’s Mate Nelson Doromal Jr/Released)