Lt. Col. Scott Stewart, 910th Security Forces Squadron commander, listens as U.S. Air Force Col. Garry Little, commander of Air Force Office of Special Investigations Region 1, talks about the fallen AFOSI agents memorialized on a wall in the lobby of the OSI building here, Nov. 29, 2017. The wall, featuring portraits of the fallen members, was unveiled during a ceremony. According to the organization’s website, AFOSI has been the Air Force’s major investigative service since 1948. (U.S. Air Force photo/Eric White)