 forewarning of this attack. We need to look at intelligence differently. Secondly, we need to lower the temperature of our political rhetoric. Part of the danger here is that the voices of extremism have become intermingled with mainstream political and media figures who often mimic, they both mimic the same language, and that adds to the volatility of the threat environment. John Cohen, thanks very much. Up next, the Senate candidate who's in the front row at Donald Trump's rally. We're going to speak with him.