Report of Investigation: Unknown Subject, Unusual Aerial Phenomena, Near Position No. 6 (44-15N 132-57W), Fairfield-Suisun AFB, California

This report details an investigation into an unusual aerial phenomenon sighted on August 2, 1949, by the crew of a 'Lark Dog' weather mission aircraft. The aircraft, operated by the 374th Reconnaissance Squadron (VLR) Weather, was flying at approximately 44 degrees 15 minutes North and 132 degrees 57 minutes West when the crew observed white, streak-like formations appearing to emerge from cloud tops. The witnesses, including Aircraft Commander 1st Lt. Glenn D. Mull, Navigator 1st Lt. John Matt, and Weather Observer 1st Lt. Philip G. Kemp, reported that the streaks ascended from an altitude of 15,000 feet to 17,000 feet at specific angles. The observation lasted approximately 15 minutes. The crew took photographs of the phenomenon with a K-20 aerial camera. No sound was heard, and no objects were detected on the aircraft's radar. The investigation, requested by Colonel John G. Swope and conducted by Special Agent Joseph W. Cagle, included interviews with the crew and verification with the Air Force Pacific Fleet, which confirmed that no naval air operations were conducted in the vicinity at the time of the sighting. The official conclusion categorized the event as a cloud or contrail formation. The report includes weather data for the area and notes that the investigation was ongoing as of October 1949, with reports being forwarded to the Air Materiel Command at Wright-Patterson Air Force Base.