at the hearing like hillary clinton testified? >> carol, i will say only this. we still have quite a few interviews to go. we will absolutely interview folks from every part of government that was involved in the incident that night whether it's department of defense t white house, the national security council. certainly the central intelligence agency as well and we'll bring in senior people from those organizations to understand all that went on that night. you're right. there were two cia folks. i actually had a chance to spend time with the father and sister of one of those two warriors who was killed. we owe it to them to get this right and to talk to all the folks who knew about what happened and so we can prevent something like this. >> if this hearing was to find out who was at fault, why wasn't petraeus part of the hearing yesterday and why wasn't the defense secretary leon pennetta called as well?