A U.S. Air Force Airman assigned to the 633rd Civil Engineer Squadron uses a compass during a joint radiological response training at Joint Base Langley-Eustis, Virginia, Oct. 3, 2018. The teams also employed beta-gamma detectors, x-ray and alpha particle detectors in order to record and relay the information for the health risk assessment. (U.S. Air Force photo by Airman 1st Class Anthony Nin Leclerec)