UFO Report, 4 June 1967, Colorado

This document consists of a series of official Air Force communications and a subsequent 'Memo for the Record' regarding a UFO sighting that occurred on 4 June 1967, near Peterson Field in Security, Colorado. The initial report describes a single, white, long object with a bubble, estimated to be five times as long as it was wide. The object was observed from the ground using 10x50 binoculars for a duration of three hours, moving from west to east. The weather conditions were noted as having 4-5/8 of the sky covered with high cirrus clouds. Major Edward L. Stricker, the Assistant Base Operations Officer at Peterson Field, reported that there was no known air traffic or phenomena to account for the sighting. Following the report, Major Quintanilla initiated a thorough investigation to determine if the object was a stray high-altitude balloon. This investigation involved contacting the 6th Weather Group at Goodfellow AFB, the Office of Naval Research, the University of Minnesota, the Holloman Balloon Control Center, and Winzen Research Corp. The investigators systematically checked for balloon launches from various locations, including Palestine, Texas, and Minneapolis, Minnesota. Despite these extensive efforts and inquiries into derelict balloons, all contacted organizations confirmed that their balloons were accounted for or could not be linked to the sighting. The investigation concluded that the cause of the sighting remained unknown.