Project 10073 Record — Chicago, Illinois, May 1966

This document contains records from Project 10073 regarding two separate U.F.O. sightings reported in Chicago, Illinois, in May 1966. The first incident occurred on 18 May 1966, involving a 70-year-old female observer who reported seeing a yellow, basketball-sized, round object traveling from West to East at a 'terrific speed' for approximately three minutes before disappearing behind a building. The observer noted that the object had no sound or trail. The second incident occurred on 26 May 1966, reported by a 33-year-old male Chicago City Fireman. He described the object as looking like a star, but much brighter, and noted that it moved from North to South before veering East. He observed it for 30 to 45 minutes before it disappeared instantaneously, comparing the disappearance to blowing out a match. Both reports were processed by the 928th Troop Carrier Group (Reserve) at O'Hare International Airport. Major Hector Quintanilla, Jr., Chief of Project Blue Book, sent follow-up correspondence to both witnesses on 1 July 1966, stating that the information received was insufficient for evaluation and requesting that they complete an attached FTD Form 164. The official conclusion for the first sighting was that it was a 'possible aircraft' or potentially a satellite. The second case remained classified as 'insufficient data for evaluation' due to the lack of returned follow-up information.