Join Into The Portal for Part II of the Great Lakes Triangle: Vanished Planes. We explore the Kinross Incident, where a USAF F-89 fighter jet disappeared without a trace, the tragic circumstances of the United Airlines Flight 389, the cause of which continues to elude investigators to this day and much more. Theories abound in Part two of our Great Lakes Series… find out why this area has been dubbed the Deadliest Freshwater Graveyard in the World.