Project Blue Book Sighting Report — Longmont, Colorado, October 1966

This document contains the official Project Blue Book record for a UFO sighting reported in Longmont, Colorado. The initial report, filed via military channels, indicated a sighting on 26 October 1966, though the witness later corrected the date to 6 October 1966 in correspondence with Major Hector Quintanilla, Jr. The witness, a civilian, reported observing a stationary object for approximately three hours. The object was described as having changing colors—specifically red, green, and amber—and appeared to have a revolving red light. The witness noted that the object was brighter than the stars and, at one point, appeared to hover over Greeley, Colorado, though the witness felt it was closer than the estimated forty miles. The witness also reported seeing a small red light emerge from the object. The Air Force investigation, involving checks with local agencies and the FAA, concluded that the sighting was an astronomical phenomenon. Specifically, the report identifies the object as the star Capella, which was rising in the north-eastern sky at the time of the observation. The file includes the original Project 10073 Record, correspondence between Major Quintanilla and the witness regarding the date discrepancy, and the completed FTD Form 164 questionnaire detailing the witness's account.