This part applies to the Office of the Secretary of Defense, the Military Departments (including the Coast Guard when it is operating as a Military Service in the Navy), the Chairman of the Joint Chiefs of Staff, the Combatant Commands, the Defense Agencies, and the DoD Field Activities (hereafter referred to collectively as “the DoD Components”). This part also applies, by agreement with the Department of Homeland Security (DHS), to the Coast Guard at all times, including when it is a service in the Department of Homeland Security. The policies herein also affect the Departments of Transportation, Homeland Security, Energy (National Nuclear Security Administration), the Central Intelligence Agency, and any department or agency in which regular appropriations are made in the Departments of Labor, Health and Human Services, Education, and Related Agencies Appropriations Act. The term “Military Services,” as used herein, refers to the Army, the Navy, the Marine Corps, the Air Force, and the Coast Guard, including their Reserve or National Guard Components. The term “Related Agencies” as used herein refers to the Armed Forces Retirement Home, the Corporation for National and Community Service, the Corporation for Public Broadcasting, the Federal Mediation and Conciliation Service, the Federal Mine Safety and Health Review Commission, the National Commission on Libraries and Information Science, the National Council on Disability, the National Education Goals Panel, the National Labor Relations Board, the National Mediation Board, the Occupational Safety and Health Review Commission, the Social Security Administration, the Railroad Retirement Board and the United States Institute of Peace.