Now we know about Rice and Hadley, her deputy. But how about Zelikow? He's a former NSC official from the first Bush administration and a close associate of Rice's. The two of them even wrote a book together.

He was in the key meetings where the warnings -- seemingly ignored -- about al Qaida came up. He seems like someone you'd want to talk to to find out what they were warned about and why they didn't take the warnings more seriously.

Well, you don't have to look far to find him. He runs the 9/11 Commission. Zelikow is the Executive Director of the Commission, which means he has operational control of the investigation under the overall management of the two co-chairs Tom Kean and Lee Hamilton.