“Section 5703 of title 5” substituted in text for “section 5 of the Administrative Expenses Act of 1946, as amended [5 U.S.C. 73b–2],” on authority of Pub. L. 89–554, § 7(b), Sept. 6, 1966, 80 Stat. 631, the first section of which enacted Title 5, Government Organization and Employees.