(1) The terms commercial item, nondevelopmental item, component, and commercial component have the meanings provided in section 4 of the Office of Federal Procurement Policy Act (41 U.S.C. 403).

(2) The term head of an agency means the Secretary of Defense, the Secretary of Homeland Security, and the Administrator of the National Aeronautics and Space Administration.

(3) The term agency means the Department of Defense, the Coast Guard, and the National Aeronautics and Space Administration.