Project 10073 Record Card — Vallejo, California, 16 April 1952

This document contains a Project 10073 record card and associated field reports regarding unidentified aerial phenomena observed in April 1952. The primary report details a sighting on 16 April 1952 in Vallejo, California, by a witness identified as a school official and amateur astronomer. The witness reported observing two disk-shaped, light-orange objects moving in a straight line at high speed for approximately 10 seconds. The objects appeared near the star Regulus and disappeared near the stars Castor and Pollux. The witness noted that the objects remained parallel throughout the observation and eventually grew dim before disappearing. The official conclusion for this incident was categorized as 'Possibly Astronomical' (METEOR). The document also includes a separate report from 17 April 1952, involving a phone report from an inactive USAFR officer regarding 8 to 12 glowing objects in a 'V' formation traveling east to west over Bethesda at 2140 hours. This secondary sighting was investigated by the Air Force, which determined that a B-45 aircraft from Langley was flying in that area at 38,000 feet at the time, which was considered a very probable explanation for the Bethesda sighting. The document concludes with a note that jet interceptor squadrons were contacted regarding the 17 April event, with no jet activity reported.