Project Blue Book Incident Report — Duluth, Minnesota, 23 August 1966

This document contains the Project Blue Book record for an unidentified aerial phenomenon sighting reported on 23 August 1966 in Duluth, Minnesota. The primary witness, a civilian employee of the local Highway Department, observed a single object for approximately 45 seconds. The object was described as having a flashing red and green light, remaining stationary initially before disappearing by flying straight up. The witness reported that their dog barked during the event. An investigation was conducted by the 29th Air Division, involving a conversation with Lt. Wm. B. Stoecker. Lt. Stoecker clarified that the initial report stating no aircraft were in the area was based on limited information from the local airport, which only maintains records of aircraft taking off from that specific facility and not those flying over the region. Major Hector Quintanilla, Jr., Chief of Project Blue Book, formally notified the witness on 29 August 1966 that the information provided was insufficient for a full evaluation and requested that the witness and his wife complete additional FTD Form 164 reports. The official conclusion recorded for the case is 'INSUFFICIENT DATA FOR EVALUATION'.