Grand-Sault
At 2045 hrs, another person on duty in the control tower received a call to track the mysterious craft on radar. For the next 40 minutes, it was observed circling around the weapons storage area, when it suddenly vanished, as though it had landed or dropped below the radar. Witnesses later observed it flying away towards Grand Falls, New Brunswick, twelve miles to the east. Messages were sent to the National Military Command Center, the Air Force Chief of Staff, and Strategic Air Command headquarters at Offutt Air Force Base. The base continued to remain on a high state of alert until the following morning, as efforts to identify the unidentified aircraft through the Maine State Police, local police departments, and the Houlton Federal Aviation Administration office remained elusive.