During a severe thunderstorm over <a href="https://en.wikipedia.org/wiki/Washington_(state)" id="mw8A" rel="mw:WikiLink" title="Washington (state)">Washington</a> state, a <a href="https://en.wikipedia.org/wiki/Aircraft_hijacking" id="mw8Q" rel="mw:WikiLink" title="Aircraft hijacking">hijacker</a> calling himself Dan Cooper (aka <a href="https://en.wikipedia.org/wiki/D._B._Cooper" id="mw8g" rel="mw:WikiLink" title="D. B. Cooper">D. B. Cooper</a>) parachutes from a <a href="https://en.wikipedia.org/wiki/Northwest_Airlines" id="mw8w" rel="mw:WikiLink" title="Northwest Airlines">Northwest Orient Airlines</a> plane with $200,000 in ransom money. He has never been found.