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

In planning an attack, persons have various roles.

No one has ever been able to convince me that optimism is not preferable to pessimism.

So without getting into the specifics, I can tell you that to the extent that investigation is a relatively important investigation and meaningful, the president would have been periodically briefed.

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.

And so every one of us in the FBI, I don't care if it's a file clerk someplace or an agent there or a computer specialist, understands that our main mission is to protect the public from another September 11, another terrorist attack.

Leaking of classified material is a concern.