Special Agent William Velez, left, the superintendent assigned to Det. 816, and Michael Horn, a Special Agent assigned to Detachment 816, pose for a photoshoot at Ellsworth Air Force Base, S.D., Nov. 3, 2017. The Air Force Office of Special Investigations has been the Air Force's major investigative force reporting to the Inspector General and Office of the Secretary of the Air Force since Aug. 1, 1948. (U.S. Air Force photo by Airman 1st Class Donald C. Knechtel)