<a href="https://en.wikipedia.org/wiki/Nuclear_weapons_testing" id="mw3A" rel="mw:WikiLink" title="Nuclear weapons testing">Nuclear weapons testing</a>: At the <a href="https://en.wikipedia.org/wiki/Nevada_Test_Site" id="mw3Q" rel="mw:WikiLink" title="Nevada Test Site">Nevada Test Site</a>, the United States <a href="https://en.wikipedia.org/wiki/Upshot-Knothole_Grable" id="mw3g" rel="mw:WikiLink" title="Upshot-Knothole Grable">conducts its first and only</a> <a href="https://en.wikipedia.org/wiki/Nuclear_artillery" id="mw3w" rel="mw:WikiLink" title="Nuclear artillery">nuclear artillery</a> test.