This part applies to:

(a) Office of the Secretary of Defense, the Military Departments, the Office of the Chairman of the Joint Chiefs of Staff and the Joint Staff, the Combatant Commands, the Office of the Inspector General of the Department of Defense, the Defense Agencies, the DoD Field Activities, and all other organizational entities within the Department of Defense (hereinafter referred to collectively as the “DoD Components”).

(b) All SNM, regardless of form, whether in reactor cores or other items under the direct control of the DoD Components (hereinafter referred to as “DoD SNM”).

(c) Nuclear weapons containing SNM that are in DoD custody (hereinafter referred to as “nuclear weapons in DoD custody”).

(d) Contractors, consultants, and grantees of the Department of Defense.