<a href="https://en.wikipedia.org/wiki/1966_Palomares_B-52_crash" id="mwARU" rel="mw:WikiLink" title="1966 Palomares B-52 crash">Palomares incident</a>: A <a href="https://en.wikipedia.org/wiki/Boeing_B-52_Stratofortress" id="mwARY" rel="mw:WikiLink" title="Boeing B-52 Stratofortress">B-52</a> bomber collides with a <a class="mw-redirect" href="https://en.wikipedia.org/wiki/KC-135_Stratotanker" id="mwARc" rel="mw:WikiLink" title="KC-135 Stratotanker">KC-135 Stratotanker</a> over Spain, killing seven airmen, and dropping three 70-kiloton <a href="https://en.wikipedia.org/wiki/B28_nuclear_bomb" id="mwARg" rel="mw:WikiLink" title="B28 nuclear bomb">nuclear bombs</a> near the town of <a href="https://en.wikipedia.org/wiki/Palomares,_Almería" id="mwARk" rel="mw:WikiLink" title="Palomares, Almería">Palomares</a> and another one into the sea.