§ 664.
(d)
Full Tour of Duty.—
An officer shall be considered to have completed a full tour of duty in a joint duty assignment upon completion of any of the following:
(1)
A joint duty assignment that meets the requirement in subsection (a).
(2)
Accrued joint experience in joint duty assignments as described in subsection (e).
(3)
A joint duty assignment with respect to which the Secretary of Defense has granted a waiver under subsection (b), but only in a case in which the Secretary determines that the service completed by that officer in that duty assignment shall be considered to be a full tour of duty in a joint duty assignment.
(4)
A second and subsequent joint duty assignment that is less than the period required under subsection (a).
(e)
Accrued Joint Experience.—
For the purposes of subsection (d)(2), the Secretary of Defense may prescribe, by regulation, certain joint experience, such as temporary duty in joint assignments, joint individual training, and participation in joint exercises, that may be aggregated to equal a full tour of duty. The Secretary shall prescribe the regulations with the advice of the Chairman of the Joint Chiefs of Staff.
(Added [Pub. L. 99–433, title IV, § 401(a)], Oct. 1, 1986, [100 Stat. 1028]; amended [Pub. L. 100–180, div. A, title XIII, § 1303(a)], Dec. 4, 1987, [101 Stat. 1170]; [Pub. L. 100–456, div. A, title V], §§ 514, 517(b), Sept. 29, 1988, [102 Stat. 1969], 1971; [Pub. L. 104–106, div. A, title V, § 501(b)], (e), (f), Feb. 10, 1996, [110 Stat. 290], 292; [Pub. L. 106–65, div. A, title X, § 1066(a)(5)], Oct. 5, 1999, [113 Stat. 770]; [Pub. L. 107–107, div. A, title V, § 522], Dec. 28, 2001, [115 Stat. 1097]; [Pub. L. 109–364, div. A, title V, § 519(d)(1)], Oct. 17, 2006, [120 Stat. 2191]; [Pub. L. 110–417], [div. A], title V, § 524, Oct. 14, 2008, [122 Stat. 4446]; [Pub. L. 114–328, div. A, title V, § 510], Dec. 23, 2016, [130 Stat. 2110]; [Pub. L. 115–232, div. A, title X, § 1081(a)(9)], Aug. 13, 2018, [132 Stat. 1983].)