<a href="https://en.wikipedia.org/wiki/Nuclear_weapons_testing" id="mw0Q" rel="mw:WikiLink" title="Nuclear weapons testing">Nuclear weapons testing</a>: The <a href="https://en.wikipedia.org/wiki/Castle_Romeo" id="mw0g" rel="mw:WikiLink" title="Castle Romeo">Romeo shot</a> of <a href="https://en.wikipedia.org/wiki/Operation_Castle" id="mw0w" rel="mw:WikiLink" title="Operation Castle">Operation Castle</a> is detonated at <a href="https://en.wikipedia.org/wiki/Bikini_Atoll" id="mw1A" rel="mw:WikiLink" title="Bikini Atoll">Bikini Atoll</a>. Yield: 11 megatons.