We take a look at the infamous DB Cooper and his hijacking of a Boeing 727 aeroplane, known as the only unsolved case of air-piracy in commercial aviation history. This legendary skyjacking took place on 1971, on a plane flying from Portland to Seattle. Extorting a ransom which is today valued at $1,260,000, Mr Cooper parachuted head first out the back of the plane... and he was never to be seen again.