DB Cooper: Case Closed?                                                                                                
                                                                                                                                                
                                                        In 1971, a man hijacked and threatened to blow up an airliner, extorting $200,000 from its owner, Northwest Orient. He then parachuted from the plane -...                                                    
                                                    
                                                        In 1971, a man hijacked and threatened to blow up an airliner, extorting $200,000 from its owner, Northwest Orient. He then parachuted from the plane - and was never seen again. Learn how the case of DB Cooper took over 40 years to crack.