>> it means that first of all it's more disburse. and secondly, you have opportunities to intercept and hear about and to learn about ahead of time. when you have individuals or small groups, that is much more difficult. and thirdly, our ability to collect intelligence is much more limited when.s persons are involved than say l internationally. there are all kinds of different things that go into play. what michael said is right. we're not talking about huge numbers all across the country, but what we are talking about is an ever evolving threat that has not kept united states immune, and there are u.s. persons involved and that means in the department of homeland security, itself has had to evolve. many askladen, and when you look homegrown threat and you look at