U.S. Air Force Staff Sgt. De’Quan Roland-Hoover, 316th Security Support Squadron K-9 trainer, releases his military working dog, Karo, to perform controlled aggression with Staff Sgt. Jimmy Stone, 316th SSPTS K-9 handler, at Joint Base Andrews, Md., Sept. 17, 2024. Military working dogs are trained in various settings to help them learn how to operate in challenging or unfamiliar environments. (U.S. Air Force photo by Airman 1st Class Martha Moore)