Documents / Official release
This undated Central Intelligence Agency document is a set of briefing notes for Walter N. Elder about an unidentified object flying near Puerto Rico in November. It says the destroyer U.S.S. Gyatt tracked a radar contact at more than 3,800 knots on 19 November. The object paced an F-8 Crusader and then climbed away. The pilot described a delta shaped object about the size of a jet fighter. The notes say ONI had no further information.
From the source:Release of 2026-08-07 Incident: Undated, Caribbean Sea. This document contains briefing material prepared for Mr. Walter N. Elder, Executive Assistant to the Director of the Central Intelligence Agency (CIA), regarding a November 19, 1964, incident allegedly involving unidentified aircraft in the vicinity of Puerto Rico. The previous entry in this collection, CIA-UAP-D022, contains CIA memoranda on the same subject matter. The briefing includes additional details regarding that incident, including a characterization of the meteorological conditions and sensing capabilities of nearby U.S. military collection systems. The briefing states that a radar system aboard USS Gyatt, a guided missile destroyer operating in the vicinity, detected a contact tracking more than 3,800 knots (approximately 4,373 mph) over a period of 21 minutes. The briefing contains visual estimates regarding the phenomenon’s apparent capabilities from the pilot of an F-8 Crusader who was present during the incident.
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4. The U. S. S. Gyatt confirmed radar tracks with motion pictures of radar scope presentation. The pilot estimated speed to be in excess of Mach 3. 5. ONI has no further information on this subject and we have requested that they notify us of similar incidents in the future. 6. For your information, the U. S. S. Gyatt is a Navy Surface-to-Air Missile Destroyer equipped with the latest and most accurate radars.
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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 2 pages are in the text index: search them above, or from the library's search.