10 U.S.C. § 138a, 138b
Section 138a, added Pub. L. 106-65, div. A, title IX, §911(b)(1), Oct. 5, 1999, 113 Stat. 718, §133b; renumbered §138a and amended Pub. L. 111-84, div. A, title IX, §906(b)(1), (c)(2)(D), Oct. 28, 2009, 123 Stat. 2426, 2427; Pub. L. 111-383, div. A, title IX, §901(b)(5), Jan. 7, 2011, 124 Stat. 4319; Pub. L. 113-291, div. A, title IX, §901(h)(1)(C), (D), Dec. 19, 2014, 128 Stat. 3466, related to Assistant Secretary of Defense for Logistics and Materiel Readiness.
Section 138b, added Pub. L. 87-651, title II, §202, Sept. 7, 1962, 76 Stat. 518, §135; amended Pub. L. 92-596, §4(2), Oct. 27, 1972, 86 Stat. 1318; Pub. L. 95-140, §2(a), Oct. 21, 1977, 91 Stat. 1172; Pub. L. 99-348, title V, §501(b)(1), (2), (e)(1), July 1, 1986, 100 Stat. 707, 708; Pub. L. 99-433, title I, §105, Oct. 1, 1986, 100 Stat. 997; Pub. L. 99-500, §101(c) [title X, §903(b)(1)], Oct. 18, 1986, 100 Stat. 1783-82, 1783-132, and Pub. L. 99-591, §101(c) [title X, §903(b)(1)], Oct. 30, 1986, 100 Stat. 3341-82, 3341-132; Pub. L. 99-661, div. A, title IX, formerly title IV, §903(b)(1), Nov. 14, 1986, 100 Stat. 3911, renumbered title IX, Pub. L. 100-26, §3(5), Apr. 21, 1987, 101 Stat. 273; renumbered §137 and amended Pub. L. 103-160, div. A, title IX, §§901(a)(1), 904(d)(1), Nov. 30, 1993, 107 Stat. 1726, 1728; Pub. L. 104-106, div. A, title IX, §903(c)(3), Feb. 10, 1996, 110 Stat. 402; Pub. L. 104-201, div. A, title IX, §901, Sept. 23, 1996, 110 Stat. 2617; Pub. L. 106-65, div. A, title IX, §911(d)(1), Oct. 5, 1999, 113 Stat. 719; renumbered §139a, Pub. L. 107-314, div. A, title IX, §901(a)(1), Dec. 2, 2002, 116 Stat. 2619; Pub. L. 111-23, §104(a)(1), May 22, 2009, 123 Stat. 1717; renumbered §138b and amended Pub. L. 111-383, div. A, title IX, §901(b)(6), (k)(1)(B), Jan. 7, 2011, 124 Stat. 4319, 4325; Pub. L. 112-239, div. A, title IX, §904(e)(1), Jan. 2, 2013, 126 Stat. 1867; Pub. L. 113-291, div. A, title IX, §901(h)(2)(C), Dec. 19, 2014, 128 Stat. 3466, related to Assistant Secretary of Defense for Research and Engineering.