D.B. Cooper, also known as Dan Cooper, is a mysterious figure who became infamous for hijacking a Boeing 727 aircraft on November 24, 1971. The enigmatic character boarded the plane in Portland, Oregon, and during the flight, he revealed that he had a bomb and demanded $200,000 in ransom, as well as parachutes. Cooper released all the passengers after the ransom was delivered, and then ordered the plane to fly to Mexico. However, somewhere over the Pacific Northwest, Cooper jumped out of the plane with the ransom money, a parachute, and was never heard from again. His disappearance has baffled investigators and has become the subject of numerous theories and speculations. D.B. Cooper’s daring heist and subsequent vanishing act remains one of the most captivating unsolved mysteries in the history of aviation.