(a) Sums from the appropriations made pursuant to subsection (a) of section 289b of this title may be transferred to any department, agency, or independent establishment of the Government to carry out the purposes of such subsection, and such sums shall be available for obligation and expenditure in accordance with the laws governing obligations and expenditures of the department, agency, independent establishment, or organizational unit thereof concerned, and without regard to section 3324(a) and (b) of title 31 and section 6101 of title 41.

(b) Upon request of the Organization, any department, agency, or independent establishment of the Government (upon receipt of advancements or reimbursements for the cost and necessary expenses) may furnish supplies, or if advancements are made may procure and furnish supplies, and may furnish or procure and furnish services, to the Organization. When reimbursement is made it shall be credited, at the option of the department, agency, or independent establishment concerned, either to the appropriation, fund, or account utilized in incurring the obligation, or to an appropriate appropriation fund, or account which is current at the time of such reimbursement.