attack on the headquarters
... that an armored van was used in an attack on the headquarters of the Dallas Police Department?
... that an armored van was used in an <b id="mwB4A"><a href="./2015_attack_on_Dallas_police" id="mwB4E" rel="mw:WikiLink" title="2015 attack on Dallas police">attack on the headquarters</a></b> of the <a href="./Dallas_Police_Department" id="mwB4I" rel="mw:WikiLink" title="Dallas Police Department">Dallas Police Department</a>?