But since September 11, we have made every effort to try to work closely with state and local law enforcement.

And from the moment that we realized it was a terrorist attack, there isn't an agent or a support person in the FBI that wasn't committed to bringing to justice those who were responsible for this.

I would say in just about every investigation we have, there will be differences of opinion, where you have partial facts, as to what those facts mean.

In the last 10 years, in narcotics task forces, in a number of violent crime task forces, we've worked very closely together with state and local law enforcement.

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.

We had to address information technology in the ways we had not before and give the agents the tools that they need to do their job more efficiently and more expeditiously.

There'll be differences of opinion in just about every intelligence analysis that you make.