Documents / Report
This August 1949 technical report from the US Air Force Air Materiel Command presents Project Grudge's investigation of unidentified flying objects through January 1949. Drawing on consultants including Dr. J. A. Hynek, Rand Corporation, the Air Weather Service and Dr. P. M. Fitts, it explains most of 244 incidents as balloons, aircraft, astronomical phenomena, hoaxes or psychological errors. It concludes the objects pose no direct threat to national security and recommends reducing the investigation in scope.
entirely satisfactory, due to the fact that the number of personnel available was not sufficient to cover each report adequately and have time for recording and analyzing material collected. Furthermore, it was learned that project personnel could not be well enough varied in all the technological and scientific fields involved in this study to efficiently execute all phases of this work. Therefore, in September 1945 the method of operation of the project was revised. Though experience had been gained to make it evident that a large proportion of disc reports areas from eightings of unfamiliar objects and failure to recognize known objects for what they were. The course then became apparent. It has since been the endeavor to have adequate investigations of all reports, systematic tabulation of all information, and analysis of information by competent technical personnel in all branches of science and engineering into which the reported object may conceivably fall. In this way misrepresented and generally unfamiliar objects, heavy makers, and psychopathological reporters may be identified, and these reports eliminated from the study. With these out of the way, the succeeding steps would develop. In implementing the above plan, the following general procedure was established and followed: A. Receipt of Initial Reports 1. Personal letter and personal contact. 2. Newspaper clippings and radio news broadcasts. 3. Reports from military and naval installations, (as a result of official directives; these make up the largest bulk of reports). B. Investigation of Reports 1. A few reports are investigated by Headquarters, Air Material Command personnel, ATI field teams or project personnel. 2. When a sighting involves only military personnel, especially in out-of-the-way locations, local base intelligence officers are requested to investigate. 3. The largest number of reports are investigated by the appropriate CII District, by request through 9th District CII. 4. All investigators are instructed to use ABC form titled, "Guide to Investigation Undertified Flying Objects" to assure collection of all available, pertinent information. The Guide to Investigation is frequently revised to incorporate recommendations of technical consultants to the project. C. Regarding of Information After Receipt of Report of Invitation 1. Upon completion of investigation, the reported eight- ing is then treated as an incident and assigned a consecutive number.
Report, from the classic collection. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 413 pages are in the text index: search them above, or from the library's search.