U.S. Marines assigned to Marine Corps Installations Pacific and lll Marine Expeditionary Force and firefighters with Fire and Emergency Services, MCIPAC, conduct a simulated mass casualty as a part of Exercise Constant Vigilance on Camp Courtney, Okinawa, Japan, Sept. 23, 2025. Constant Vigilance 2025 serves as a Force Protection Condition and crisis response evaluation to validate regional antiterrorism plans and policies, ensuring Marines are prepared for a wide range of contingencies. (U.S. Marine Corps video by Cpl. Martha Linares)