Former Under Secretary of the US Air Force (1979-1981), Professor, Tufts University
Chief Negotiator, Strategic Arms reduction talks with the Former Soviet Union
Senior Advisor to the U.S. House of Representatives’ Homeland Security Committee (2002-2005)
Former Assistant Secretary of State, Former Special Assistant to the Secretary of Defense
USMC (Retired), Former Special Strategic Assistant to the Chairman of the Joint Chiefs of Staff
USN (Retired), Former Director of the NSA (1977-81), Former Deputy Director of the CIA (1981-82)
Senior Research Fellow at the Matthew B. Ridgway Center for International Security Studies
Former Deputy Assistant Secretary of Defense for Peacekeeping and Humanitarian Assistance
Former Principal Director for European and NATO Affairs in the Office of the Secretary of Defense