Marines evacuate a simulated casualty Jan. 10 on Camp Courtney in Okinawa, Japan. The Marines with the 31st Marine Expeditionary Unit’s Maritime Raid Force took part in a night raid as the first of three situational training events that make up the Realistic Urban Training Exercise. Expeditionary Operations Training Group, III Marine Expeditionary Force Headquarters Group, III MEF designed the training to test the MRF’s ability to respond to any contingency or crisis in the United States Pacific Command’s area of responsibility. - Marines evacuate a simulated casualty Jan. 10 on Camp Courtney in Okinawa, Japan. The Marines with the 31st Marine Expeditionary Unit’s Maritime Raid Force took part in a night raid as the first of three situational training events that make up the Realistic Urban Training Exercise. Expeditionary Operations Training Group, III Marine Expeditionary Force Headquarters Group, III MEF designed the training to test the MRF’s ability to respond to any contingency or crisis in the United States Pacific Command’s area of responsibility.