Senior Airman Demarcus Miles, 96th Security Forces Squadron, talks into a radio during a chemical, biological, radiological, nuclear and explosive exercise at Eglin Air Force Base, Fla., Nov. 7, 2019. The Air Force Materiel Command exercise evaluated the Airmen’s ability to meet wartime and contingency taskings of employing and sustaining the force while maintaining the ability to survive and operate. (U.S. Air Force photo by Samuel King Jr.)