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STANDARD FORM NO. 64 © : 4 Wetiic Memorandum + ontrep states GOVERNMENT ie DIRECTOR, FBI DATE: March 22, 1949 FROM : §ac, SAN ANTONIO SUBJECT: PROTECTION OF VITAL INSTALLATIONS BUREAU FILE 65-5830 : wht? cess Afaeease Osh tr Re San Antonio letter to the Director dated January 31, 1949, which outlined discussion had at recent weel:ly Intelligence Conferences of G-2, ONI, OSI and FBI in the Fourth Amy Area concerning "Unidentified Aircraft" or "Unidentified Areial Phenomena" etherwise known as "flying discs", "Flying saucers" and "balls of fire", It is repeated t. this matter is considered secret by Intelligence Officers of both the Amy and the Air Force. G-2, 4th Amy, hes now advised that the above matter is now termed "Unconven- tionel Aircraft" and investigations conceming such matters have been given the name "Project Grudge", G2, 4th Amy, advised on February 16, 1949, a conference was held at Los Alamos, New Mexico, to consider the so-called "Green fire ball phenomena" which began about December 5, 1948. It was brought out this question has been classified "secret" and that investigation is now the primary responsibility of the U.S, Air Force, r liateriel Command, T-2. Dr. LINCOLN LA PAZ of the University of New Mexico, discussed one siting which he himself had made which was termed the "Starvation peak incident" and des- eribed the following characteristics which indicated that the phenomenon could not be classified as a normal meteprite fall, 1. There was an initial bright light (no period of intensity increase) and constant intensity during the duration of the phenomenon. 2. Yellow green color about 5200 Angstroms. 3. Essentially horizontal path. Trajectory traversed at constant angular velocity. Duration about tio seconds. No accompanying noise. RECORDED <j JEJ:md ec: El Pase (100-4562) ee: Dallas 1 1) Houston ittle Rock Oklahoma City