to eavesdrop
... that the CIA's black helicopter from Area 51 was used to eavesdrop on Paris Peace Talks discussions during the Vietnam War?
... that the CIA's <a href='./Hughes_OH-6_Cayuse#"The_Quiet_One"' id="mwBHQ" rel="mw:WikiLink" title="Hughes OH-6 Cayuse">black helicopter</a> from <a href="./Area_51" id="mwBHU" rel="mw:WikiLink" title="Area 51">Area 51</a> was used <b id="mwBHY"><a class="mw-redirect" href="./The_Vinh_wiretap" id="mwBHc" rel="mw:WikiLink" title="The Vinh wiretap">to eavesdrop</a></b> on Paris Peace Talks discussions during the Vietnam War?