1 October 1948, A US Air Force pilot sighted and pursued a UFO for 27 minutes over Fargo, North Dakota. According to US Air Force officer Edward J. Ruppelt, this was one of three cases, along with the Mantell incident and Chiles-Whitted encounter, that shifted the Air Force's attitude about UFO reports leading to the creation of Project Blue Book
S 34° 05.769′ E 138° 59.968′