Today in 1971, an unidentified man known only as "D.B. Cooper" hijacked a Boeing 727 that was carrying passengers from Portland, OR to Seattle, WA. Cooper calmly and discreetly informed a flight attendant that he had a bomb and demanded $200,000 (about $1.2 million today), several parachutes, and a refueling for the plane. Upon landing, Cooper's demands were met and he released all hostages other than 5 crew members to continue his flight. Cooper had the crew take off and fly toward Mexico City. Sometime during the flight, Cooper jumped from the plane with the money, unbeknownst to the crew and the five other aircraft…