10 U.S.C. § 2776: Use of receipts of public money for current expenditures

Without deposit to the credit of the Secretary of the Treasury and without withdrawal on money requisitions, a disbursing official of the Department of Defense may use receipts of public money charged in the disbursing official’s accounts (except receipts to be credited to river, harbor, and flood control appropriations) for current expenditures, with necessary bookkeeping adjustments being made.