[Provided that no appropriations available to the Department of Defense could be used for operating aircraft under the jurisdiction of the armed forces for the purpose of proficiency flying, as defined in Department of Defense Directive 1340.4, except in accordance with regulations prescribed by the Secretary of Defense; and was repealed and restated in section 2245 of this title by Pub. L. 101–510, div. A, title XIV, § 1481(e)(1), (3), Nov. 5, 1990, 104 Stat. 1706.]