A prior section 2339, added Pub. L. 114–328, div. A, title II, § 217(a)(1), Dec. 23, 2016, 130 Stat. 2051, set the micro-purchase threshold for basic research programs and activities of the Department of Defense science and technology reinvention laboratories, prior to repeal by Pub. L. 115–232, div. A, title VIII, § 821(c)(1), Aug. 13, 2018, 132 Stat. 1853.