D.B. Cooper mystery endures: The FBI says DNA found on a tie left behind by the legendary hijacker doesn't match that of the latest suspect, who died in 1999.
Two Oklahoma women claim their late relative, Lynn Doyle Cooper, is the real 'D.B. Cooper,' who plotted a hijack heist on Thanksgiving Day 1971, the only unsolved skyjacking in US history.
D.B. Cooper, as he has since become known, in 1971 hijacked a plane bound for Seattle, got $200,000 and a parachute in ransom for passengers, then jumped out into a stormy night. D.B. Cooper has never been found. The FBI says it has a new clue.