CAMP PENDLETON, Calif. (Dec. 15, 2020) Chief Gunner�s Mate (Select) Chris Carabelli, a range line coach assigned to Maritime Expeditionary Security Squadron (MSRON) 11, instructs shooters during a live-fire qualification exercise as part of unit level training. The Maritime Expeditionary Security 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.)