Secret Service director says current threat environment is "like we've never seen before"
Norah O'Donnell shares what to expect from her upcoming conversation with Secret Service Director Sean Curran and Deputy Director Matthew Quinn. Watch the full interview on Sunday on 60 Minutes.
<p>Norah O'Donnell shares what to expect from her upcoming conversation with Secret Service Director Sean Curran and Deputy Director Matthew Quinn. Watch the full interview on Sunday on 60 Minutes.</p>