SEAL BEACH, Calif. (June 7, 2022) Quartermaster 2nd Class Brittany Heppner, from Phoenix, Arizona, assigned to Maritime Expeditionary Security Squadron (MSRON) 11, performs a takedown as part of five-phase oleoresin capsicum (OC) spray obstacle course during the security reaction force-basic (SRF-B) course held onboard Naval Weapon Station Seal Beach. 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.)