U.S. Coast Guard Petty Officer 3rd Class Derek Marr, a machinery technician with the Maritime Safety and Security Team (MSST) 91105 San Francisco exits the pool during a water survival training event in Alameda, California, April 8, 2026. Trainees were taught survival techniques for overboard scenarios while wearing heavy and potentially entangling law enforcement gear. (U.S. Coast Guard photo by Petty Officer 3rd Class Kenneth Wiese)