In the United States, it's the mandate of the FBI to gather information relating to terrorism, go out and collect it, to do the interviews, to do the investigative work.

In the context of September 11, there were so many that lost their lives that - how do you single out one person? There were so many acts of heroism that day from so many people, whether it be firemen and police officers in New York and our agents also.

I think around the world, our agents are the best collectors of information you'll find.

We cannot go up on a wire. We cannot do a search without a judge on the FISA Court approving it and determining that we have met the standard that has been set forth by Congress in order to utilize these techniques.

In planning an attack, persons have various roles.

Leaking of classified material is a concern.

But we had - I think if you look at law enforcement 10 years ago, if you look at the challenges, the FBI was focused excessively on what was happening in the United States.