It's the only unsolved hijacking case in the history of commercial aviation. On the afternoon of November 24, 1971—Thanksgiving Eve—a man boarded a flight from Portland to Seattle and slipped a note to a flight attendant. He threatened to detonate a bomb if he didn't receive a hefty ransom. Once he got the money, the hijacker released all passengers and ordered the crew to fly to Mexico. Mid-air, with cash in hand, the man jumped from the aircraft, deploying a parachute into the pitch-black sky.

This man has come to be known as D.B. Cooper, and after a 45-year FBI investigation, his identity, whereabouts, and motive remain unknown.

SOURCES

https://www.fbi.gov/history/famous-cases/db-cooper-hijacking

https://vault.fbi.gov/D-B-Cooper%20/

https://www.britannica.com/biography/D-B-Cooper

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