strange detail? SARI HORWITZ: Strange detail. He's an interesting character in this whole story because it may not have become public if not for that agent. He was also part of the Tampa social scene. He was friends with Jill Kelley. And, as friends, they were talking in June. And she said, you know, I'm getting all these really bizarre, harassing e-mails. What should I do? And he said, I will take it to the bureau. And he takes to it the Tampa office of the FBI to the cyber-crime division, which they have there. But he wasn't one of the investigators on the case. He brought it to them, but then the case moved forward. He later learned from the agents that it involved Broadwell, because they uncovered the tie to Broadwell, and it involved Petraeus. And he was upset at the slow pace that he believed the investigation was taking. He was frustrated. He called a friend of his, who called a lawmaker in Washington state, who called Eric Cantor on Capitol Hill. And this agent said, this could be a matter of national security. What are we doing about this? It involves General Petraeus. And Eric Cantor's chief of staff then called the chief of staff of the FBI director, Robert Mueller. JEFFREY BROWN: Now, speaking of Broadwell, you're going back to where things stand on the Petraeus investigation. What do we know about why FBI people were at her house? What were they looking for last