Vietnam War: <a href="https://en.wikipedia.org/wiki/Operation_Ivory_Coast" id="mw_w" rel="mw:WikiLink" title="Operation Ivory Coast">Operation Ivory Coast</a>: A joint United States Air Force and Army team raids the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Sơn_Tây_(Hanoi)" id="mwAQA" rel="mw:WikiLink" title="Sơn Tây (Hanoi)">Sơn Tây</a> <a href="https://en.wikipedia.org/wiki/Prisoner-of-war_camp" id="mwAQE" rel="mw:WikiLink" title="Prisoner-of-war camp">prisoner-of-war camp</a> in an attempt to free American prisoners of war thought to be held there.