Military Report
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23857122-0457-180273-0013
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Intelligence summary
This document outlines the U.S. Air Force's early responses and organizational actions regarding unidentified aerial phenomena (UAP), particularly focusing on the establishment of Project Sign and its subsequent evolution into Project Grudge. It highlights the increasing public demand for explanations of flying discs and the Air Force's efforts to systematically collect and analyze reports of such sightings.
Tags & topics
Project GrudgeProject SIGNU.S. Air ForceUnidentified Aerial Phenomena historical documentsMilitaryNational SecurityUAPUFO
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Since August 19];7 until the present, except May 19,9 as
noted above, the number of reports mafintained a monthly average of
approximately twelve, with occasional up=surges often directly
attributable to an unusual or overly publicized. report.
ITT. Air Force Comizance of Unidentified Aerial Objects
In September 19:7, the Air Force was forced te take official
cognizance of the "flying discs" because of increasing cemand from
the public for an explanation, and as a result of certain publications
persisting in using a sensational approach in reporting such items,
and often implying that something subversive, dangerous, and fearful
was upon uS.
Hq. ALC in a letter dated 23 September 191;7, requested the
Commanding General, Army Air aid to issue a cirective assigning a
priority, security classification and code name for a detailed study
of flying disc reports. Hq. AMC explained that their action was based
on the opinian that the phenomena reported appeared to be real. Await-
ing a specific directive, Hq. ANC collected information on flying disc
incidents in order to more clearly define the nature of the phenomena.
On the 22nd of Tecember 1947, in a memorandum, “Analysis of Flying lise
Reports", the Director of Intelligence, Hq. USAF, concurred with ALC
recommendations and forwarded them to the Director of Research and
Development, DCS/M, Hq. USAF, for reply to the Commanding Ceneral, ALC.
In a letter dated 30 December 19:7, the Director of Research and Devel~
opment, Ies/k, advised the Commanding General, AMC, that Air Force policy
was not to ignore reports of 5 cada gerber and phenomena in the atmosphere.
To implement this policy, ANC was directed by Hq. USAF, to set up a pro=
ject with the purpese of ear tine g, collating, evaluating, and distri-
buting to interested government agencies and contractors, all informa-
tion conceming sightings and phenomena in the atmosphere which might
be construed to be of concern to the national security. This directive
assigned a priority of 2A to the project, a RESTRICTED classification
and a code name of "Sign". (The code name of "Sign" for the project
was changed to "Orudge" by a 16 [ecember 191,85 request of the lirector
of Research and pave Open es ms/M. "Grudge" under the U.S. Joint
Services coce word index refers to the title "fetailed Study of Flying
Iiscs".) As a result of the directive from Hq. USAF for establishment
of the special project, Hq. AMC Technical Instruction No. 2185, dated
11 February 1915, was dal ge on and assigned responsibility for the
project activities to the Technical Intelligence fivision, Intelligence
Tepartment, Hq. ALC.
Department of Air Force and Tepartment of Army letters directed
all respective subordinate units to report directly to ‘tir Materiel Command
all information concerning unidentified flying objects. Air Intelligence
Requirements Memorandum Noe lh was published 15 February 1949 at the request
of Air Materiel Command in an effort to obtain more comprehensive and
accurate information.
IV. Project icninistration
At the outset, project personnel proceeded ae air to the scene
ec sighting to personally interrogate witnesses. This was not
oO
i
Declassification Authority: NND 57565