Project 10073 Record Card — Santa Cruz, California, 15 April 1952

This document contains a sighting report from 15 April 1952, involving two circular, dull grey, phosphorescent objects observed over Santa Cruz, California. The witness, a Master Sergeant from the 3904th Composite Wing, was using an Argus 20x spotting scope when he observed the objects approaching from the southwest at a high rate of speed. The observation lasted between six and eight seconds. The witness noted that the objects moved in a straight and level path and were completely silent. He estimated their size as approximately two inches in diameter at a distance of fifty feet, with an altitude between 1,500 and 3,000 feet. The witness, who was described by his superiors as a man of outstanding maturity and intelligence, initially believed the objects were jets but noted the lack of visible wings or engine noise. The report was forwarded through the Strategic Air Command to the Air Technical Intelligence Center at Wright-Patterson Air Force Base for evaluation. The official record card for Project 10073 indicates that the objects were not identified, and the conclusion was listed as 'Insufficient Data for Evaluation'. The file includes the original correspondence from the witness, a drawing of the objects, and internal military routing slips.