FBI bomb technicians teach Air Force and local law enforcement members about the history of vehicle-borne improvised explosive devices at Beale Air Force Base, California, May 5, 2021. More than 50 people participated in the training, including members from Beale’s Fire Department and K-9 unit, as well as several local law enforcement entities. (U.S. Air Force photo by Airman 1st Class Jason W. Cochran)