Central Intelligence Agency | National Security Agency | European Space Agency | International Atomic Energy Agency | United States Environmental Protection Agency | Federal Emergency Management Agency | National Security Council | Organization for Security and Co-operation in Europe | United States Agency for International Development | United States National Security Council | United States Information Agency | United Nations Security Council | National Security Advisor | United States Department of Homeland Security | security | National Security Advisor (United States) | Environment Agency | Social Security Administration | United Nations Security Council resolution | Mutual Broadcasting System | United Nations Security Council Resolution 1267 | Transportation Security Administration | International Energy Agency | Hacker (computer security) | George C. Marshall European Center for Security Studies | William Morris Agency | United Nations Security Council Resolution 1373 | Transport Layer Security | Social Security | Committee of General Security |
A commander in the U.S. Naval Reserve, he was a duty officer in the White House Map Room, 1941-46, accompanying Truman to the Potsdam Conference; Assistant to Clark Clifford, the Special Counsel to the President, 1947-49; Administrative Assistant to the President, 1949-51; and Assistant to the Director, Mutual Security Agency, 1951-53.