U.S. Airmen from the 39th Airlift Squadron don their Mission Orientated Protective Posture gear before heading outside during an exercise at Pope Army Air Field, N.C., Feb. 6, 2018. The wear and use of MOPP gear is to prepare for contested chemical environments which was a key point during the Operational Readiness Exercise 18-01. (U.S. Air Force photo by Staff Sergeant Alexander Guerrero)