Take, for example, this: a man on board a Portland-to-Seattle flight in 1971 passed a note to a flight attendant between orders of whisky. The note said he had a bomb. His demand? A $200,000 hostage ransom and parachutes. The plane landed, the highjacker got the ransom, and after taking off again, he skydived out of the plane, holding on to the cash. Some of the dough washed up near the Columbia River, but the highjacker, if he lived, was never found.