10 U.S.C. § 8113Section
§ 8113. Navy and Marine Corps: warrant officer grades
The warrant officer grades in the Navy and the Marine Corps are:
(1) Chief warrant officer, W–5.
(2) Chief warrant officer, W–4.
(3) Chief warrant officer, W–3.
(4) Chief warrant officer, W–2.
(5) Warrant officer, W–1.
(Aug. 10, 1956, ch. 1041, 70A Stat. 314, §5503; Pub. L. 102–190, div. A, title XI, §1131(9), Dec. 5, 1991, 105 Stat. 1506; renumbered §8113, Pub. L. 115–232, div. A, title VIII, §807(b)(2), Aug. 13, 2018, 132 Stat. 1834.)