SEAL BEACH, Calif. (Sept. 18, 2020) Capt. Jonathan C. Puskas, from Lake Oswego, Ore., commanding officer, Maritime Expeditionary Security Squadron (MSRON) 1, motivated his Sailors by joining them in completing the oleoresin capsicum (OC) spray obstacle course as part of security reaction force-basic (SRF-B) course provided by Maritime Expeditionary Security Group (MESG) 1 Training Evaluation Unit (TEU). 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.)