Section, added Pub. L. 99–145, title I, § 123(a)(1), Nov. 8, 1985, 99 Stat. 599; amended Pub. L. 99–433, title I, § 110(g)(4), Oct. 1, 1986, 100 Stat. 1004; Pub. L. 100–26, § 7(k)(2), Apr. 21, 1987, 101 Stat. 284, related to testing requirements for wheeled or tracked armored vehicles.