Airman 1st Class Sackwon Matthews, 22nd Force Support Squadron force management technician, sets a cordon around an unexploded ordnance during a chemical, biological, radiological and nuclear defense training Sept. 5, 2019, at McConnell Air Force Base, Kan. Cordons are set around the UXO to keep personnel at a safe distance if it happens to detonate. (U.S. Air Force photo by Airman 1st Class Marc A. Garcia)