nationwide, including civil engineering units, facilities design and construction centers, maintenance and logistics commands, and the Coast Guard Academy, except that none of the funds provided in this Act may be used to reduce operations within any civil engineering unit unless specifically authorized by a statute enacted after the date of enactment of this Act. 221. Funds made available for Overseas Contingency Operations/Global War on Terrorism under the heading Coast Guard—Operations and Support may be allocated by program, project, and activity, notwithstanding section 503 of this Act. 222. The United States Secret Service is authorized to obligate funds in anticipation of reimbursements from Federal agencies and entities, as defined in section 105 of title 5, United States Code, for personnel receiving training sponsored by the James J. Rowley Training Center, except that total obligations at the end of the fiscal year shall not exceed total budgetary resources available under the heading United States Secret Service—Operations and Support at the end of the fiscal year. 223. None of the funds made available to the United States Secret Service by this Act or by previous appropriations Acts may be made available for the protection of the head of a Federal agency other than the Secretary of Homeland Security: Provided , That the Director of the United States Secret Service may enter into agreements to provide such protection on a fully reimbursable basis. 224. For purposes of section 503(a)(3) of this Act, up to $15,000,000 may be reprogrammed within United States Secret Service—Operations and Support . 225. Funding made available in this Act for United States Secret Service—Operations and Support is available for travel of United States Secret Service employees on protective missions without regard to the limitations on such expenditures in this or any other Act if the Director of the United States Secret Service or a designee notifies the Committees on Appropriations of the Senate and the House of