Project 10073 Record Card: Ventura, California Sighting, 21 May 1957

This document consists of a Project 10073 record card and associated intelligence reports regarding a UFO sighting that occurred on May 21, 1957, in Ventura, California. The primary observation involved a round, silver or white object, described as being the size of a pinhead, which was sighted by a school teacher, approximately 20 students, and a chemical superintendent named Don Martin. The object was observed for 23 minutes, during which it reportedly oscillated and moved in an irregular path before fading from sight. The sighting occurred shortly after jet noise was heard, suggesting a potential sonic boom. A separate report included in the document details a similar sighting in the San Diego Bay area, where an object was observed for over 45 minutes, appearing round to the naked eye but elliptical when viewed through binoculars. Military intelligence assessments noted that while the object was not detected by radar, the specific area of the sighting was known to have a radar blind spot. Investigators concluded that there was insufficient data to definitively identify the object, noting that it could have been a balloon or an aircraft, given the high volume of small aircraft traffic in the vicinity. The reports emphasize the lack of radar confirmation and the subjective nature of the visual descriptions provided by the witnesses.