<a href="https://en.wikipedia.org/wiki/Vietnam_War" id="mwmw" rel="mw:WikiLink" title="Vietnam War">Vietnam War</a>: <a href="https://en.wikipedia.org/wiki/Operation_Chopper_(Vietnam)" id="mwnA" rel="mw:WikiLink" title="Operation Chopper (Vietnam)">Operation Chopper</a>, the first American combat mission in the war, takes place.