LONG BEACH, Calif. (Aug. 23,2022) Sailors assigned to Maritime Expeditionary Security Squadron (MSRON) 11 conduct Seaward Continuum of Force dynamic drills as part of the Maritime Expeditionary Security Force (MESF) Boat University (BU) Advanced Course. MESF BU is designed to train and qualify our Sailors to sustain mobilization readiness. MESF 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.)