Evaluation of UFO's

This memorandum, dated January 26, 1965, was prepared by Donald F. Chamberlain, Assistant Director of Scientific Intelligence, for the Director of Central Intelligence. It serves as a formal response to a request for information regarding the recent increase in reports of Unidentified Flying Objects (UFOs). The document notes that while there has been a recent surge in public interest and reporting, investigations have consistently identified these phenomena as conventional. Specifically, the memorandum cites the July 1964 Sunnyvale, California incident, which was later identified as an aircraft, and reports associated with two Gemini launches in April 1964, which were attributed to radar reflections. Additionally, it addresses a December 1964 incident in Patuxent, Maryland, where radar tracking of two objects was ultimately determined to be the result of malfunctioning radar circuitry. The Office of Scientific Intelligence states that it monitors Air Force investigations and concurs with their findings that these reports do not indicate a threat to the security of the United States, nor do they suggest a foreign origin. The document notes that for the year 1964, only 3% of investigated reports remained classified as unidentified. The memorandum concludes by noting that official Air Force statistics for the period 1946-1963 are attached to the document.