 I'M MARGARET BRENNAN, AND THIS HAS BEEN FACE THE NATION. TODAY'S GUESTS WERE REPUBLICAN SENATOR TOM COTTON, COLORADO DEMOCRATIC CONGRESSMAN JASON CROWE, CBS NEWS CONTRIBUTOR AND HOMELAND SECURITY EXPERTS SAM VINEGRAD AND A.T. SMITH, AS WELL AS CBS NEWS CYBERSECURITY EXPERT CHRIS KREBS. THE EXECUTIVE PRODUCER OF FACE THE NATION IS MARY HAGER. THIS BROADCAST WAS DIRECTED BY SHELLY SCHWARTZ.