DEAN'S FOUR MAJOR OPERATIVES IN HIS INTELLIGENCE-GATHERING EFFORTS

(Sygma )

John "Jack" Caulfield.

(Sygma)

Tony Ulasewicz, the ex-New York City detective who became a private eye in service of the White House.

(UPI / Bettmann)

G. Gordon Liddy, "a weapon waiting to be aimed and fired."

(UPI / Bettmann)

E. Howard Hunt, Liddy's cohort and an ex-CIA employee.