Aeronautical and space activities peculiar to or primarily associated with the development of weapons systems or military operations; the common defense; the Department of Defense, the Department of the Army, the Department of the Navy, and the Department of the Air Force, generally; maintenance and operation of the Panama Canal, including administration, sanitation, and government of the Canal Zone; military research and development; national security aspects of nuclear energy; naval petroleum reserves, except those in Alaska; pay, promotion, retirement, and other benefits and privileges of members of the Armed Forces, including overseas education of civilian and military dependents; selective service system; and strategic and critical materials necessary for the common defense.  Comprehensive study and review of matters relating to the common defense policy of the United States.