Airman 1st Class Donnovan Stelly, 9th Civil Engineering Squadron Explosive Ordnance Disposal team member, wraps detonating cord around some TNT during military working dog detection training on Beale Air Force Base, California, Nov. 19, 2020. The type of explosives used in the training were varied to give the K-9 handlers a better understanding of which dogs could detect certain explosives. (U.S. Air Force Photo by Airman 1st Class Jason W. Cochran)