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RESTRICTED
DEPARTMENT OF THE AIR FORCE
HEADQUARTERS UNITED STATES AIR FORCE
DIRECTORATE OF INTELLIGENCE
WASHINGTON 25, D. C.
15 February 1949
AIR INTELLIGENCE REQUIREMENTS
MEMORANDUM NUMBER 4
UNCONVENTIONAL AIRCRAFT
PART I - GENERAL
1.
PURPOSE
The purpose of this memorandum is twofold:
a. To enunciate continuing Air Force requirements for information pertaining to sightings of
unconventional aircraft and unidentified flying objects, including the so-called "Flying Discs.''
b. To establish procedures for reporting such information.
2. RESCISSION
Department of the Army Collection Memorandum Number 7, dated 21 January 1948, and letter,
CSGID 425.1, dated 25 March 1948, both subject as above, which have been transferred to Air
Force agencles for action, are herewith superseded.
3. REPORTING
a.
General
(1) As complete an answer to the requirements enunciated in Part n, as may be procur­
able, should be dispatched by means of electrical transmission immediately after sightings.
(2) Supplementary reports should be for warded as available by the most expeditious means
consistent with the importance of the information reported.
b. Major Air Commands (overseas) and Air Attaches
(1) Initial and supplementary cabled reports wm be transmitted to the Director of IntelU­
gence, Headquarter s United State:s Air Force. Cables wlll contain the phase, "Pass to
COMGENAMC WRIGHT-PATTERSON AFB, DAYTON, OHIO, ATTN: MCIAX0-3."
RESTRICTED
ce- 11892, AF