The media epithet was used to refer to the man responsible for hijacking a boeing 727 aircraft on november 24th of 1971. The aircraft was taken in flight between portland, oregon and seattle, washington. The final destination for the flight was the seattle-tacoma international airport and it originated from the northwest orient airport. When the man using the alias dan cooper arrived at northwest orient airlines, he bought himself a one-way ticket to seattle, washington on flight number 305 with cash.

A thrilling new graphic nonfiction series about real fbi cases, launching with a gripping, minute-by-minute account of the only unsolved airplane hijacking in the u.[...] no. 001: norjak
November 24, 1971
Portland, oregon
2:00 p.m.

In addition, two independent research groups have presented compelling suspects in the case, and have backed their announcements with a media blitz that has included two documentaries, several books, and a lawsuit against the fbi.
Further, cliff ammerman, the air traffic controller who actually monitored the flight when cooper jumped, has finally been interviewed, resulting in original and critical perspectives on the flight path and potential landing zones.