United States Marine Corps | United States Army Corps of Engineers | United States Coast Guard | National Guard | National Guard of the United States | National Security Agency | Peace Corps | Royal Flying Corps | National Security Council | United States Army Air Corps | Organization for Security and Co-operation in Europe | Air National Guard | Royal Army Medical Corps | Civilian Conservation Corps | United States National Security Council | United Nations Security Council | National Security Advisor | United States Department of Homeland Security | security | National Security Advisor (United States) | guard | Army Air Corps | Social Security Administration | Army National Guard | United Nations Security Council resolution | Corps of Engineers | Reserve Officers' Training Corps | Marine Corps Recruit Depot Parris Island | United Nations Security Council Resolution 1267 | Transportation Security Administration |
McMahon and Judge were members of the Marine Security Guard (MSG) Battalion at the US Embassy, Saigon and were providing security for the DAO Compound, adjacent to Tân Sơn Nhứt Airport, Saigon.