200221-M-UF994-1028 FORT GREELY, Ala. (Feb. 21, 2020) Hospital Corpsman 2nd Class Nicolas A. Riley, a battalion independent duty corpsman, with 7th Engineer Support Battalion, 1st Marine Logistics Group, demonstrates to other corpsman how to secure a casualty utilizing an improvised litter during litter carry drills conducted in Fort Greely, Alaska, Feb. 21, 2020, in preparation of exercise Arctic Edge 2020. Corpsman participating in the training will gain the knowledge and skills necessary to maintain readiness in arctic regions including Alaska, the most strategic place in the world. (U.S. Marine Corps photo by Lance Cpl. Christopher England/Released)