Arleigh Burke-class destroyers
... that the Arleigh Burke-class destroyers are hardened against electromagnetic pulses?
... that the <b id="mwGg"><a href="./Arleigh_Burke-class_destroyer" id="mwGw" rel="mw:WikiLink" title="Arleigh Burke-class destroyer"><i id="mwHA">Arleigh Burke</i>-class destroyers</a></b> are hardened against <a href="./Electromagnetic_pulse" id="mwHQ" rel="mw:WikiLink" title="Electromagnetic pulse">electromagnetic pulses</a>?