§ 5702.
(a)
(1)
Under regulations prescribed pursuant to
section 5707 of this title, an employee, when traveling on official business away from the employee’s designated post of duty, or away from the employee’s home or regular place of business (if the employee is described in
section 5703 of this title), is entitled to any one of the following:
(A)
a per diem allowance at a rate not to exceed that established by the Administrator of General Services for travel within the continental United States, and by the President or his designee for travel outside the continental United States;
(B)
reimbursement for the actual and necessary expenses of official travel not to exceed an amount established by the Administrator for travel within the continental United States or an amount established by the President or his designee for travel outside the continental United States; or
(C)
a combination of payments described in subparagraphs (A) and (B) of this paragraph.
(2)
Any per diem allowance or maximum amount of reimbursement shall be established, to the extent feasible, by locality. The Secretary of Defense shall not alter the amount of the per diem allowance, or the maximum amount of reimbursement, for a locality based on the duration of the travel in the locality of an employee of the Department.
(3)
For travel consuming less than a full day, the payment prescribed by regulation shall be allocated in such manner as the Administrator may prescribe.
([Pub. L. 89–554], Sept. 6, 1966, [80 Stat. 498]; [Pub. L. 91–114, § 1], Nov. 10, 1969, [83 Stat. 190]; [Pub. L. 94–22, § 3], May 19, 1975, [89 Stat. 84]; [Pub. L. 96–54, § 2(a)(36)], Aug. 14, 1979, [93 Stat. 383]; [Pub. L. 96–346, § 1], Sept. 10, 1980, [94 Stat. 1148]; [Pub. L. 99–234, title I, § 102], Jan. 2, 1986, [99 Stat. 1756]; [Pub. L. 102–378, § 2(47)], Oct. 2, 1992, [106 Stat. 1353]; [Pub. L. 115–232, div. A, title VI, § 603(b)], Aug. 13, 2018, [132 Stat. 1794].)