crowd was serious enough for the secret service to take action. >> and jeremy diamond had video, and there are little snippets of what was happening from the different angles, and there you can see the man being restrained. >> it's important to remember we may see people where we hear civilians say things about what they think they are seeing, you know, scared, you know, instant adrenaline reaction, and until the secret service comes up and confirms details, these are unconfirmed reactions. it's breaking news. >> which is important to say, because people will say, oh, he has a gun, and that doesn't mean he did. >> if you have a political rally, you have to go through metal detecters, and they do a sweep with dogs before they let anybody in, and reporters if you are part of a pool or part of a