; (C) how accurately budget estimates have anticipated funds expended on nuclear security and nuclear nonproliferation programs; and (D) how funds for nuclear security and nuclear nonproliferation programs that are not obligated or expended for the purpose for which they are appropriated are transferred or reprogrammed. (4) Recommendations, as appropriate, for the development of new metrics to evaluate Federal nuclear security and nuclear nonproliferation programs. (c) Form Each report under subsection (a) shall be submitted in unclassified form, but may include a classified annex. (d) Definitions In this section: (1) Appropriate Congressional committees The term appropriate congressional committees means— (A) the Committee on Appropriations, the Committee on Armed Services, the Committee on the Budget, the Committee on Energy and Commerce, the Committee on Foreign Affairs, and the Committee on Homeland Security of the House of Representatives; and (B) the Committee on Appropriations, the Committee on Armed Services, the Committee on the Budget, the Committee on Energy and Natural Resources, the Committee on Foreign Relations, and the Committee on Homeland Security and Governmental Affairs of the Senate. (2) Nuclear security and nuclear nonproliferation program The term nuclear security and nuclear nonproliferation program means a program of the Federal Government with the goal of— (A) preventing nuclear and radiological terrorism; (B) preventing nuclear proliferation; (C) implementing arms control agreements; (D) stopping illicit transfers of nuclear technology; (E) screening cargo at domestic and international ports; (F) researching and developing tools and strategies to address future non-proliferation activities; or (G) supporting any other activity involving the security of nuclear and radiological materials.