Declassified on July 23, 1997, Project Grudge was originally released in August of 1949 as a SECRET Technical Report (NO 102-AC 49/15-100) by the headquarters of the Air Materiel Command, Wright Patterson AFB, Dayton Ohio. Approved by Lt. Col. Hemstreet and Col. Watson, it is 406 pages long and covers a large number of UFO sightings along with investigation analysis, conclusions, and supplementary reports. Overall, it is just the basic background work on pedestrian UFO sightings by many credible military witnesses. No discussion of crashes, alien bodies, or the other TOP SECRET material found in more classified reports — just the way you would expect it.
The following extract (classified SECRET) is taken from the SUMMARY to the U.S. Air Force’s PROJECT GRUDGE TECHNICAL REPORT on UNIDENTIFIED FLYING OBJECTS of August 1949. Prepared by Lt. H. W. Smith and Mr. G. W. Towles for the Commanding General Harold E. Watson, Colonel, USAF, Chief Intelligence Department, it states:
While there are approximately 375 incidents on record, only incidents Nos. 1 thru 244 are encompassed in this report. Of the later incidents, many have not yet been investigated, few have been completely tabulated, and none have been submitted to the consulting agencies. It is certain that better over-all results will be obtained in the analysis of the later reports, as these incidents generally have been more completely investigated. Since 5 December 1948, a series of recurring phenomena described as “green fireballs” have been reported in the general vicinity of Albuquerque, New Mexico. Dr. Lincoln La Paz, noted meteoritic expert, has been directly, though unofficially, associated with the investigation of these sightings and has himself observed the phenomena. Dr. La Paz states he is convinced the green fireballs are not ordinary meteors. This group of incidents has little or nothing in common with other incidents on file with Project “Grudge”, therefore, these incidents are not considered in this report. The Scientific Advisory Committee was asked to investigate this matter and had advised that an independent investigation be conducted in the field of atmospheric research.
Upon eliminating several additional incidents due to vagueness and duplication, there remain 228 incidents, which are considered in this report. Thirty of these could not be explained, because there was found to be insufficient evidence on which to base a conclusion.
It is important to stress that Project Grudge was one of three acknowledged U.S. Air Force projects dealing with UFO investigations – the other two being Sign and Blue Book. Between 1948 (the year that saw the creation of Project Sign) and 1969 (the year in which Project Blue Book was officially terminated), 12,618 UFO reports were investigated by personnel assigned to these three projects. According to the Air Force, out of this total only 701 UFO reports remained unexplained; and that with respect to the remainder, “…there was no indication of a technology beyond our own scientific knowledge…” The Air Force further asserted (and continues to assert to this day) that no sighting “…could be considered an extra-terrestrial vehicle [and] throughout Project Blue Book there was never a shred of evidence to indicate a threat to our national security.”
How then do we reconcile these statements with the Majestic documents, the very demonstrable threats to national security posed by UFOs and cited in the documents, and the data pertaining to UFO crash-retrievals suggesting that at least some UFOs are alien spacecraft? It must be noted that the bulk of the data pertaining to projects Sign, Grudge and Blue Book was classified up to Secret level only. However, as the Majestic documents make abundantly clear, data pertaining to crash-retrievals was classified at Top Secret level and need-to-know clearance to access such information was strictly required. Furthermore, consider the following extracted from a 1969 USAF memorandum prepared by Brigadier General C.H. Bolender, the Air Force’s Deputy Director of Development: “[R]eports of unidentified flying objects which could affect the national security are made in accordance with JANAP 146 or Air Force Manual 55-11, and are not part of the Blue Book system.”
Project Grudge can be downloaded in the "Authentication" section under Documents Obtained from the National Archives.