A prior section 2439, added Pub. L. 99–145, title IX, § 912(a)(1), Nov. 8, 1985, 99 Stat. 685, § 2305a; amended Pub. L. 99–433, title I, § 110(g)(3), Oct. 1, 1986, 100 Stat. 1004; renumbered § 2438 and amended Pub. L. 100–26, § 7(b)(9)(A), (k)(2), Apr. 21, 1987, 101 Stat. 280, 284; Pub. L. 101–510, div. A, title VIII, § 805, Nov. 5, 1990, 104 Stat. 1591; renumbered § 2439, Pub. L. 102–484, div. A, title VIII, § 821(a)(1)(A), Oct. 23, 1992, 106 Stat. 2459, related to preparation of acquisition strategy for major programs and use of competitive alternative sources, prior to repeal by Pub. L. 103–355, title III, § 3007(a), Oct. 13, 1994, 108 Stat. 3331.