Project 10073 Record — Sighting near Madison, Wisconsin, 2 September 1966

This document contains a series of records regarding a UFO sighting reported by a civilian, Roger Dass, in Madison, Wisconsin, on 2 September 1966. The witness reported observing a large, stationary, flashing red and blue-green light in the western sky for approximately 15 minutes. Upon returning to the area 30 minutes later, the object was no longer visible. The report includes a formal Project 10073 record, a teletype message from the 2nd Air Division at Truax Field, and a completed U.S. Air Force technical information questionnaire. The official conclusion reached by the Air Force, specifically under Project Blue Book, was that the object was the star Arcturus. The investigation noted that Arcturus was setting at approximately 2230 CST, and at the time of the observation, it was at a low elevation, which likely caused the perceived flashing and color changes due to atmospheric conditions. The file also includes a letter from Major Hector Quintanilla, Jr., Chief of Project Blue Book, dated 16 September 1966, requesting further information from the witness regarding a separate observation reported on 1 September 1966, as the initial data provided was insufficient for evaluation.