A US Navy flight, Atlantic/Continental Air Transport Squadron One, located at USN Air Station, Patuxent River, Maryland, was out of Keflavik, Iceland at 49°-50° north latitude and 50°-03° west longitude about 90 miles west of Gander, Newfoundland out over the Atlantic Ocean. The aircraft, probably bound for Gander to refuel judging by its position and course of 230° true, though the report does not mention this. US Naval Reserve Lt. Graham Bethune, copilot of Flight 125, was occupying the captains seat on the left side of the cockpit in the passenger plane when he first sighted a huge object 300' in diameter on a near collision course with their aircraft.
The copilot stated in his official report:
I observed a glow of light below the horizon about 1,000' to 1,500' above the water. We both observed its course and motion for about 4 or 5 minutes before calling it to the attention of the other crew members, when its angle of attack changed.
Its altitude and size increased as though its speed was in excess of 1,000 MPH. It closed in so fast that the first feeling was we would collide in mid air. At this time its angle changed and the color changed. It was definitely circular and reddish orange on its perimeter. It reversed its course and tripled its speed until it was last seen disappearing over the horizon.
The object came within five miles of their aircraft which was verified by radar evidence of the encounter, the object had been tracked by DEW Line Ground Radar at the base in Goose Bay, Labrador.