Mysterious plane unnerves Clintonville

Frederick Valentich's 'UFO' Sighting and Disappearance

Dumb Money, Alien Invasions, Road Trips & Mysteries On Screen This Week - Columbus Underground

Why Are Planes Vanishing Over Area 51?, Unveiled

UFO suspicions still cloud disappearance of Frederick Valentich

Three avoid serious injuries in Waldo County plane crash

Janet Airlines flies secret jets out of Las Vegas to AREA 51

UFO Disappearance - Unsolved Mysteries

UFO Disappearance - Unsolved Mysteries

What's this Mystery Plane spotted over Texas? - The Aviationist

Flight instructor talks about dangers at Watsonville Airport following deadly crash - CBS San Francisco

Investigation into deadly plane crash underway

Plane Makes Emergency Landing in Libertyville, Fire Officials Say – NBC Chicago

Coyne Incident over Charles Mill Lake was most credible UFO sighting of 1973