Donald Gregg
Donald Phinney Gregg (born December 5, 1927) is a retired American politician. Gregg worked for the Central Intelligence Agency for 31 years, from 1951 to 1982. He was a National Security Council advisor from 1979 to 1982. He was also the National Security Advisor to U.S. Vice President George H. W. Bush from 1982 to 1989.