- Chief of the CIA's Osama bin Laden unit at the Counterterrorist Center from 1996 until 1999.
- Resigned from the CIA on 12 November 2004 after 22 years.
- Is considered one of, if not the foremost, expert on Osama bin Laden.
- Graduated from Canisius College in 1974, earned an M.A. from Niagara University in 1976, another M.A. from Carleton University in 1981, received a Ph.D. in British Empire-U.S.-Canada-U.K. relations from the University of Manitoba in 1986.
- He is an adjunct professor at Georgetown University's Center for Peace and Security Studies.
- Lost his position as a senior fellow with the Jamestown Foundation in February, 2009.
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