The bombing of <a href="https://en.wikipedia.org/wiki/United_Air_Lines_Flight_629" id="mwAXo" rel="mw:WikiLink" title="United Air Lines Flight 629">United Air Lines Flight 629</a> occurs near <a href="https://en.wikipedia.org/wiki/Longmont,_Colorado" id="mwAXs" rel="mw:WikiLink" title="Longmont, Colorado">Longmont, Colorado</a>, killing all 39 passengers and five crew members aboard the <a href="https://en.wikipedia.org/wiki/Douglas_DC-6" id="mwAXw" rel="mw:WikiLink" title="Douglas DC-6">Douglas DC-6</a>B airliner.