Project 10073 Record Card and Investigation Report — Danville, California, 4 September 1952

This document contains a collection of records related to a UFO sighting reported on 4 September 1952 in Danville, California. The primary witness was a 15-year-old high school student who observed a silver, circular object while at the Danville Community Church. The witness described the object as having the size of a fighter aircraft and moving in straight, level maneuvers at a speed estimated to be faster than a jet. The observation lasted approximately 30 seconds, during which the witness noted no sound. The object eventually disappeared from view by moving behind a church building. The witness, who was outdoors at the time, noted the weather was clear with scattered clouds and a slight breeze. The report includes a Project 10073 record card, a routing and record sheet, and a formal report of investigation. Interestingly, while the sighting occurred in California, the file includes correspondence and routing slips referencing Los Alamos, New Mexico, and the Atomic Energy Commission, suggesting that the report was handled with heightened scrutiny due to the sensitivity of the Los Alamos site. The investigation was initiated by the District Commander upon receipt of the information. The witness provided a sketch of the object's path and noted that he believed it might have been an experimental aircraft. The official documentation from the Air Technical Intelligence Center (ATIC) acknowledges receipt of the report and provides the witness with a questionnaire to standardize the data. The final evaluation of the report remains inconclusive, with the record card noting the report as 'sketchy'. The document is marked as unclassified and includes standard declassification markings.