PROJECT 10073 RECORD CARD — San Luis Obispo, California, 20 May 1956

This document consists of a Project 10073 record card and associated teletype communications regarding an Unidentified Aerial Phenomenon sighting on May 20, 1956, in San Luis Obispo, California. The primary witness was a 65-year-old retired civilian named William Esten. He reported observing a single, round, red, glowing object moving in a southwest direction at a very high altitude. The observation lasted for approximately five minutes before the object faded into the distance. The report notes that the weather conditions were clear with 25 miles of visibility. Upon receiving the report, military authorities at the 669th ACWRON scrambled two fighter aircraft from Van Neys AFB to investigate the area. However, the pilots reported no sighting of any object in the area or along the flight track. Subsequent attempts by the evaluating agency to recontact the originating agency for additional information were unsuccessful. Consequently, the incident was officially evaluated as having insufficient data for a definitive conclusion. The documentation includes the original record card, a teletype message detailing the initial report, and a follow-up teletype confirming the lack of radar or visual confirmation by the scrambled interceptors.