On 1 March 1967 Lieutenant General Hewitt Wheless, Assistant Vice Chief of Staff to the US Air Force, issued a secret memorandum to all senior personnel and divisions. It was headed “Impersonations of Air Force Officers” and shows that the USAF were as concerned as ufologists about the matter. It cites how:
“In one reported case an individual in civilian clothes, who represented himself as a member of NORAD (the North America radar defense network), demanded and received photographs belonging to a private citizen. In another, a person in an Air Force uniform approached local police and other citizens who had sighted a UFO, assembled them in a school room and told them that they did not see what they thought they saw and that they should not talk to anyone about the sighting. All military and civilian personnel and particularly information officers and UFO investigating officers who hear of such reports should immediately notify their local OSI offices.”
What, if anything, the Air Force’s intelligence unit (the OSI) found out about these matters has never been made public.