The Secretary of the Air Force may, upon the officer’s request, retire a regular or reserve commissioned officer of the Air Force who has at least 20 years of service computed under section 9326 of this title, at least 10 years of which have been active service as a commissioned officer.

The Secretary of Defense may authorize the Secretary of the Air Force, during the period specified in paragraph (2), to reduce the requirement under subsection (a) for at least 10 years of active service as a commissioned officer to a period (determined by the Secretary of the Air Force) of not less than eight years.

(1) The Secretary of Defense may authorize the Secretary of the Air Force, during the period specified in paragraph (2), to reduce the requirement under subsection (a) for at least 10 years of active service as a commissioned officer to a period (determined by the Secretary of the Air Force) of not less than eight years.

(2) The period specified in this paragraph is the period beginning on January 7, 2011, and ending on September 30, 2018.

(Aug. 10, 1956, ch. 1041, 70A Stat. 549, § 8911; Pub. L. 101–510, div. A, title V, § 523(c), Nov. 5, 1990, 104 Stat. 1562; Pub. L. 103–160, div. A, title V, § 561(c), Nov. 30, 1993, 107 Stat. 1667; Pub. L. 105–261, div. A, title V, § 561(e), Oct. 17, 1998, 112 Stat. 2025; Pub. L. 106–398, § 1 [[div. A], title V, § 571(e)], Oct. 30, 2000, 114 Stat. 1654, 1654A–134; Pub. L. 109–163, div. A, title V, § 502(c), Jan. 6, 2006, 119 Stat. 3225; Pub. L. 109–364, div. A, title X, § 1071(a)(37), Oct. 17, 2006, 120 Stat. 2400; Pub. L. 111–383, div. A, title V, § 506(c), Jan. 7, 2011, 124 Stat. 4210; Pub. L. 112–239, div. A, title V, § 505(c), title X, § 1076(e)(6), Jan. 2, 2013, 126 Stat. 1715, 1951; renumbered § 9311 and amended Pub. L. 115–232, div. A, title VIII, §§ 806(b)(13), 809(a), Aug. 13, 2018, 132 Stat. 1833, 1840.)