you want to keep it and carl bernstein and ben bradley, the editor of the posted. finally, mark who is the number two in the fbi, think it was 11 years ago he was 90 at the time, he decided to reveal he was that source. so he and i were able to tell that story. in fact there was a movie that i think will be out about mark either this year or next year. we will see more of that detail. >> host: do you think his reason for being so-called, deep throat , was personal, patriotic, revengeful? >> guest: one of the things, as a reporter, as a human being, you realize that there are always multi- reasons and drivers and motives for any action. in the case of mark feld, i