And at that point, I think we all realized it was something tremendously tragic, probably a terrorist attack, and the next step was to go down to our command center and get things going.
Robert Mueller

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.
Robert Mueller

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

If you look at the 19 hijackers who came to the United States in Sept. 11 to commit those acts, if you'd looked at them before they got onto a plane, you could probably say the same thing. There were various levels of expertise, various levels of competence.
Robert Mueller

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.
Robert Mueller

Prior to the passage of the Patriot Act, it was very difficult - often impossible - for us to share information with the Central Intelligence Agency, with NSA, with the other intelligence agencies, and likewise, for them to share information with us.
Robert Mueller

I know when I was here prosecuting homicides in the District of Columbia, one of the most effective units here was the cold case squad, which had on it FBI agents, as well as Metropolitan Police Department homicide detectives working together.
Robert Mueller

I was in my office when - on 9/11. I think I had a number of meetings scheduled. I was just getting to know the bureau. And somebody walked in and said the first plane had - or a plane had struck the World Trade Center, one of the towers.
Robert Mueller