nuclear blackout
... that a one megaton nuclear weapon can create a radar-opaque nuclear blackout disk hundreds of kilometers across?
... that a one megaton <a href="./Nuclear_weapon" id="mwCCk" rel="mw:WikiLink" title="Nuclear weapon">nuclear weapon</a> can create a <a href="./Radar" id="mwCCo" rel="mw:WikiLink" title="Radar">radar</a>-opaque <b id="mwCCs"><a href="./Nuclear_blackout" id="mwCCw" rel="mw:WikiLink" title="Nuclear blackout">nuclear blackout</a></b> disk hundreds of kilometers across?