Project 10073 Record Card and Air Intelligence Information Report — 16 April 1961

This document details an Air Intelligence Information Report regarding a sighting of an unidentified flying object on 16 April 1961. The witness, a civilian bartender from San Antonio, Texas, who held a private flying license, reported observing two white, glowing, triangular objects while driving west on Highway 90 between Seguin and San Antonio. The witness described the objects as being 300 to 400 feet long and 125 to 150 feet wide, with curved sides and a vertical orientation with hypotenuses back to back. The observation lasted approximately five minutes during dusk. The report was prepared by Captain Eugene A. Bonfiglio of the 3510th Flying Training Wing at Randolph Air Force Base and forwarded to the Air Technical Intelligence Center at Wright-Patterson Air Force Base. Following an investigation, the military concluded that the sighting was caused by a weather balloon released from the San Antonio International Airport approximately 1.5 hours prior to the observation. The report notes that prevailing winds would have placed the balloon in the vicinity of the sighting, and that the setting sun would have reflected off the sides of the balloon, creating the appearance described by the witness. No physical evidence was found, and the report was classified as 'For Official Use Only'.