Participants and inspectors in exercise Global Thunder 20 clarify chemical findings during a simulated chemical, biological, radiological and nuclear emergency at Kirtland Air Force Base, N.M., Oct. 24, 2019. Global Thunder is a U.S. Strategic Command exercise designed to ensure an efficient mission response by testing Airmen's ability to execute command, control and operational procedures during a notional scenario. (U.S. Air Force photo by Airman 1st Class Austin J. Prisbrey)