|The first page of the 1949 report to the Joint Intelligence Committee on Unidentified
Aerial |Objects __________________________________________________________________
Among these activities were:
1. The Directorate of Intelligence personnel briefed the USAF Deputy Chief of Staff for
Operations and his staff on UFOs on April 27, 1949. (Directorate of Intelligence,
Decimal Correspondence File, "Flying Discs," 1949, National Archives II, College
2. The Air Force sent a top-secret "Unidentified Aerial Objects" presentation
with Appendix A, a summary of Air Force actions, to the Joint Intelligence Committee
(JIC) on April 27, 1949. The Committee was composed of representatives from the Army,
Navy, Air Force, State Department, FBI and CIA. (Deputy Director of Intelligence,
Records Group 341, Entry 214A, Top Secret Control #2-7051-A, National Archives II, College
Park, Maryland. Reprinted in full at the end of this article.)
3.The USAF printed copies of the Top Secret "Analysis of Flying Object Incidents
in the United States" (Air Intelligence Report 100-203-79) by the USAF Director
Intelligence and the Office of Naval Intelligence. The printed report cover shows the
date, April 28, 1949, although the document had been approved on December 1948.
Directorate of Intelligence, Current Intelligence Files: Top Secret Control #2-7341,
National Archives II, College Park, Maryland; see http://www.iufog.org/project1947/fig/1948air.htm
4. The "Memorandum for the Press: Project Saucer" was released on April 29,
1949. ("Project Saucer," Memorandum to the Press # M26-49, April 27, 1949,
Project Blue Book files; see http://www.iufog.org/project1947/fig/projsauc.htm
5. The Saturday Evening Post hit the newsstands on April 29,1949, with the first
part of Sidney Shaletts article on UFOs. ("What You Can Believe About Flying
Saucers," Saturday Evening Post, April 30, 1949, pp. 20-21, 136-39; part 2,
May 7, 1949, pp. 36, 184-86.)
The Air Force Public Relations Office cooperated fully with Shalett in the preparation
of his article, but Major General Cabell had major problems. He would rather have had
complete control over the press policy. However, his attempt to obtain this authority from
Secretary of Defense Forrestal appeared to have been thwarted by Mr. Leo of the Public
Relations Office. (See the Air Staff Study on press policy and flying discs, http://www.iufog.org/project1947/fig/1948e.htm
[dead link]; Memorandum to Forrestal on press policy, http://www.iufog.org/project1947/fig/1948f.htm
Memorandum for Record concerning press policy, http://www.iufog.org/project1947/fig/1948d.htm[dead
link] ; and Secretary of Air Force Office of Information UFO files 1947-1952, microfilm #33765,
USAF Historical Research Activity, Maxwell Air Force Base, Ala.)
Shaletts article dismissed UFOs as any type of problem despite the conclusions of
the recently printed "Analysis of Flying Object Incidents in the United States,"
which recommended that efforts be taken to determine whether UFOs represented a domestic
development. Or if not, that actions be taken to determine whether they were a foreign
Shaletts article was his own, but it was probably endorsed by Leo. The Project
Saucer press release was less negative, as Purdy pointed out to Keyhoe. There was then a
necessity to make sure that the USAF and the intelligence community knew the Directorate
of Intelligences position. Therefore, the briefings prior to the release of the
Project Saucer press memorandum informed these officials of the Air Force intelligence
Project Grudges files had been opened to
Shalett. Leo wrote to Wright Field,
advising that Shalett should be given access to all information except for foreign sources
and any material classified top secret.
Soon after Shaletts article hit the stands, other writers and editors also
requested access to the files at Wright Field. Purdy was one of the first. Maj. Gen.
Cabell may have ost his bid to limit press access, but when asked about these new
requests, Cabell responded that if one writer was given access, then all of them should
have access. Cabells sense of fair play may have helped Keyhoe and Purdy obtain the
information that convinced them that UFOs were extraterrestrial. The desired effect of
Shaletts article was soon overcome by Keyhoes articles and his subsequent
bestselling book, The Flying Saucers Are Real.
The JIC document has eluded researchers for years. In it one can see the seeds of the
later Project Grudge report. It contains a summarized history of the Air Forces
early attempt to investigate UFO reports.
There is one error in the document. The study that led to "Analysis of Flying
Object Reports in the United States" was initiated by Maj. Gen. Cabell on July 27,
1948, shortly after the Chiles-Whitted sighting, not August 6, 1948, as given in the JIC
presentation. (Records Group 341, General Files, Entry 214, Top Secret Control # 2-3931.)
In the JIC report the Directorate of Intelligence had already abandoned a major portion
of the freshly printed AAnalysis." In about 18 months the "Analysis" would
be completely discarded and ordered destroyed. (Letter, Subject: Destruction of Air
Intelligence Report Number 10079, September 25, 1950, Directorate of Intelligence,
Decimal Correspondence File, AFlying Discs," 1950, National Archives II, College Park
Report by the Director of Intelligence,
USAF, to the
Joint Intelligence Committee on
Unidentified Aerial Objects
1. To advise the Joint Intelligence Committee of the findings of the Directorate of
Intelligence, USAF, regarding the sightings of unidentified aerial objects and the Air
Force organization established for further investigation and solution of the problem.
Facts bearing on the problem
2. Following the great number of reported sightings of flying discs during the summer
of 1947, Hq, Air Materiel Command, in a letter dated 23 September 1947, requested that the
Commanding General, Army Air Forces, issue a directive assigning a priority, security
classification and code name for a detailed study of flying disc reports. Hq, Air Materiel
Command explained that their action was based on the opinon that phenomena reported
appeared to be real and that there were objects in existence which would approximate the
shape of a disc. AMC concluded that some incidents might be caused by natural phenomena
but that some incidents described characteristics which suggested evasive tactics.
Awaiting a specific directive, Hq, AMC continued to collect information on flying disc
incidents in order to more clearly define the nature of the phenomena. On the 22nd of
December 1947, in a memorandum, "Analysis of Flying Disc Reports," the Director
of Intelligence concurred with Air Materiel Commands recommendation and forwarded
their letter to the Director of Research and Development, DCS/M for reply.
3. In a letter dated 30 December 1947, the Director of Research and Development,
advised the Commanding General, AMC, that Air Force policy was not to ignore reports of
sightings and phenomena in the atmosphere but to recognize that part of its mission to
collect, evaluate and act on information of this nature. To implement this policy it was
directed that Hq, Air Materiel Command set up a project with the purpose of collecting,
collating, evaluating, and distributing to interested government agencies and contractors,
all information concerning sightings and phenomena in the atmosphere which could be
construed to be of concern to the national security. This directive assigned a priority of
2-A to the project, a RESTRICTED classification, and a code name of "SIGN."
4. At Air Materiel Command the Technical Intelligence Division was assigned the
responsibility for accomplishing this mission with the full assistance of all divisions
and activities within Air Materiel Command to permit successful completion of the project.
The cooperation of the Army, Navy, Coast Guard and F.B.I. was solicited in order to
facilitate the forwarding and investigation of all reports. Arrangements were effected for
handling such reports directly with Air Materiel Command.
5. In addition to the collection, analysis and investigation activities directed by the
project personnel at Hq, Air Materiel Command, Air Intelligence Memorandum dated 6 August
1948, subject: "Flying Saucers," required that a study be made by the Air
Intelligence Division to examine the pattern of tactics of reported flying saucers and
develop conclusions as to their probability. The results of this analysis were prepared as
Air Intelligence division(DI/USAF-ONI) Study No. 203, "Analysis of Flying Object
Incidents in the United States." The Directorate of Intelligence has maintained close
liaison with Project "SIGN" activities in order that appropriate staff sections
of Headquarters, USAF may be adequately advised on the entire subject of unidentified
aerial phenomena reports.
6. The code name of "SIGN" for the project was changed to "GRUDGE"
by a request on 16 December 1948 by the Director of Research and Development,
DCS/M, Hq, USAF. "GRUDGE" under the U.S. Joint Services Code Word Index refers to the title
"Detailed Study of Flying Discs."
Assumptions and conclusions
7. Hq, Air Materiel Command will continue its investigations under project
"GRUDGE" and the Directorate of Intelligence, USAF, will maintain close liaison
with that Command in order to advise Staff sections on the subject of unidentified aerial
8. See Appendix "A" for discussion of the problem and conclusions drawn
9. It is recommended that the Joint Intelligence Committee:
a. Furnish the Director of Intelligence,
USAF, with comments on this paper.
Unidentified Aerial Objects
Facts and Discussion 1. As of 10 March 1949, a total of 256 incidents involving
unidentified aerial objects had been recorded, under Project "SIGN." The
majority of these were domestic observations but there were many from reports from foreign
sources. In each incident the observers have been interrogated by investigators and the
results have been analyzed by technical personnel.
2. Condensed summaries have been prepared on each incident to provide basic information
to individuals and agencies having a responsibility or interest in the project.
3. The extreme lack of accurate observed details and the unpredictable occurrence of
incidents have made positive identification extremely difficult. Data on unidentified
aerial objects has grouped the incidents as follows:
13.3% - discs
43.0% - spherical or eliptical [sic] shape(including balls of fire)
6.0% - cylindrical shape
2.5% - winged objects
32.2% - shapes other than those above
4. In order to identify ordinary and conventional objects, that have probably been
included in the list of reported incidents, graphical methods have been applied as
5. Prepared graphical data includes:
a. Charts concernig unidentified aerial objects, to indicate:
(1) Type of object observed
(2) Vicinity in which particular type of object was observed
(3) Direction of flight
b. Location of guided missiles, research and related centers
c. Location of airlines, airfields, both military and commercial
d. Locations of radio beacon stations
e. Known or projected radar stations from which reports and assistance may be derived
f. Meteorological stations from which balloon release data, radiosonde or theodolite
readings may be obtained
g. Past, current, and projected celestial phenomena
h. Flight paths of migratory birds
6. A psychological analysis of the reported data is being prepared by Aero-Medical
Laboratory, AMC, for the purpose of determining those incidents that are probably based
upon errors of the human mind and senses. A preliminary verbal report from the
professional psychologists indicates that a considerable number of incidents can be
explained as ordinary occurrences that have been misrepresented, as the result of human
7. Specialist services, supplementary to those of AMC technical offices, are being
provided by a number of agencies.
8. The Air Weather Service has reviewed incident data and has provided the information
that 24 of the first 172 coincide, both with respect to location and time, with the
release of weather balloons.
9. The Ohio State University has contracted with AMC to supply astronomical services in
an effort to identify meteors, planetoids and associated phenomena. Professor
State University Astrophysicist and head of the University Observatory has reviewed the
incident summary sheets.
10. Preliminary report of Dr.
Hynek, indicates that 30 per cent of the first 200
incidents are positively attributable to astronomical phenomena, and 45 per cent could be
explained on the basis of such phenomena or the sighting of weather balloons and other
objects. This gives a total of 75 per cent of all incidents with possible explanation.
11. Members of the Scientific Advisory Board o the Chief of Staff,
USAF, who have
provided consultant services to Project "Grudge," include Dr. Irving
Chief, General Electric Research and Dr. G. E. Valley of MIT.
12. Dr.G. E. Valley has displayed an active interest in Project "Grudge" to
the extent of reviewing the reported incidents and writing an overall type of analysis in
which he groups the various objects and then analyzes each group from the standpoint of
13. Inasmuch as various surmises have been advanced that some of the reported
observations may have represented "space ships" or satellite vehicles, a special
study has been initiated with the Rand Corporation, under the Rand Project, to provide an
analysis from this standpoint and also to provide fundamental information, pertaining to
the basic design and performance characteristics that might distinguish a possible
"space ship." Rand Corporation has also informed AMC that their analysis of all
incidents leads them to the conclusion that there is nothing in any reported incidents
which would go against a rational explanation.
14. The Weather Bureau Library of the Department of Commerce has supplied information
on "ball lightning." This was requested because of the belief by some persons
that some of the observations may have represented "ball lightning." It appears
that the subject of "ball lightning" occupies an undetermined status and
authorities are not at all convinced that such a phenomenon actually exists.
15. On 8 April 1949 the repeated occurrence of green fireball phenomena in New Mexico
was discussed with Dr. Joseph Kaplan, member of the USAF Scientific Advisory Board. This
phenomenon has caused considerable concern on the part of Hq, Fourth Army and has occupied
the interests of Dr. Lincoln LaPaz of the University of New Mexico. Dr. LaPaz believes
that the phenomena are not meteorites. Because of Dr. LaPaz outstanding ability for
accurate observation and his experience in identification of meteoritic phenomena, Dr.
Kaplan expressed the belief that the green fireball phenomena should be further
investigated. Dr. Kaplans views and this phenomena were discussed 12 April 1948 with
Dr. Theodore von Karman, Chairman, USAF Scientific Advisory Board, who feels that the
problem is more properly in the field of upper atmosphere research than the field of
16. A summary of the incidents reported would indicate that:
a. All incidents which coincide with explainable aerial activities or recorded natural
phenomena should be eliminated from further consideration.
b. Creditable unexplained incidents involving light phenomena should be further
investigated and analyzed by highly competent scientists who can establish the identity
either within or without the limits of known natural phenomena.
c. Creditable unexplained incidents which might involve the use of atomic powered craft
of usual [sic] design should be considered jointly by the Atomic Energy Commission and
highly competent aerodynamicists to determine the necessity for further consideration of
such incidents by the National Defense Intelligence Agencies.
17. The majority of reported incidents are reliable to the extent that they have
involved the sighting of some object or light phenomenon.
18. In spite of the lack of accurate data provided by witnesses, the majority of
reported incidnts have been caused by mis-identification of weather balloons, high
altitude balloons with lights and/or electronic equipment, meteors, bolides, and the
19. There are numerous reports from reliable and competent observers for which a
conclusive explanation has not been made. Some of these involve descriptions which would
place them in the category of new manifestations of probable natural phenomena but others
involve configurations and described performance which might conceivably represent an
advanced aerodynamical development. A few unexplained incidents surpass these limits of
20. It is unlikely that a foreign power would expose a superior aerial weapon by a
prolonged ineffectual penetration of the United States.
[UFO doc index]