NELLIS AIR FORCE BASE, Nev. -- U.S. Air Force Airmen from various career fields participates in chemical, biological, radiological and nuclear (CBRN) training at Nellis Air Force Base, Nevada, June 14, 2023. The mission of CBRN is to protect personnel from the effects caused by incidents involving weapons of mass destruction. (U.S. Air Force photo by Senior Airman Josey Blades)