Season 21, Episode 3 The Man Who Knew

First Aired: October 3, 2002

"The Man Who Knew" profiles John O'Neill, the FBI's former New York counterterrorism chief, who was perhaps the country's foremost Al Qaeda expert. However, his intensity and flamboyance bothered many FBI bureaucrats and he was forced out in August 2001. That's the story filmmaker Michael Kirk pieces together from interviews with O'Neill allies. "We're due for something big," one recalls him saying on Sept. 10, 2001. The next day, O'Neill died on the job as World Trade Center security chief.