Icemen practice recovery operations during Arctic Gold 18-5
U.S. Air Force Staff Sgt. Mitch Whitman, a 354th Logistics Readiness Squadron vehicle mechanic craftsman, pauses for a photo while donning Mission Oriented Protective Posture (MOPP) level 4 gear during exercise Arctic Gold 18-5, Feb. 21, 2018, at Eielson Air Force Base, Alaska. MOPP level 4 is called into action when a threat of a chemical, biological, radiological, nuclear and explosive attack is imminent or in progress. (U.S. Air Force photo by Senior Airman Cassie Whitman)