U.S. Air Force Airman 1st Class Luke Calip, an emergency management specialist with the 633rd Civil Engineer Squadron Emergency Management flight, dons his protective equipment prior to going into a simulated contaminated area at Joint Base Langley-Eustis, Virginia, Oct. 10, 2019. Calip was participating in a joint Chemical, Biological, Radiological and Nuclear exercise with the Fort Eustis Fire department. (U.S. Air Force photo by Senior Airman Delaney Gonzales)