Air Force Office of Special Investigations Special Agent Grant Nelson briefs Chief Master Sgt. of the Air Force Kaleth O. Wright Aug. 14, 2017, on the 69-year history of AFOSI via the wall panels depicting the organization’s legacy, decade by decade, in the AFOSI Enlisted Heritage Hall at AFOSI Headquarters, Quantico, Va. (U.S. Air Force photo/Michael Hastings)