U.S. Marines with 3rd Battalion, 4th Marines, simulate

U.S. Marines with 3rd Battalion, 4th Marines, simulate a medical evacuation of a notionally injured Marine while conducting a raid during Arctic Expeditionary Capabilities Exercise (AECE) in Adak, Alaska, on Sept. 20, 2019. Approximately 3,000 U.S. Navy and Marine Corps personnel are participating in AECE 2019, a joint training exercise that tests expeditionary logistical capabilities in the Arctic region and prepares joint forces to respond to crises across the Indo-Pacific. (U.S. Marine Corps photo by Lance Cpl. Tia D. Carr)