Sofi, 9th Security Forces Squadron (SFS) military working dog, waits with her handler Staff Sgt. Jason Herrier, at a simulated checkpoint during military working dog detection training on Beale Air Force Base, California, Nov. 19, 2020. The checkpoint simulated an environment to familiarize the working dog with detection of explosives in approaching vehicles and while conducting search procedures. Without training similar to this, the amount of odor produced by the explosives overwhelms the dog’s smell, resulting in either fringe responses or responding before the vehicle stops at the checkpoint. (U.S. Air Force Photo by Airman 1st Class Jason W. Cochran)