; (5) contract for goods or services; and (6) support activities of partners and any other activities that— (A) further the purposes of the Heritage Area; and (B) are consistent with the management plan. (b) Duties In addition to developing the management plan, the Caddo Lake Heritage Area Commission shall— (1) for any fiscal year for which Federal funds have been expended for the Heritage Area by the Caddo Lake Heritage Area Commission under this Act— (A) submit to the Secretary an annual report that describes— (i) the specific performance goals and accomplishments of the Caddo Lake Heritage Area Commission; (ii) the expenses and income of the Caddo Lake Heritage Area Commission; (iii) the amounts and sources of matching funds; (iv) the amounts leveraged with Federal funds and the sources of the leveraging; and (v) any grants made to any other entities during the fiscal year; and (B) make available for audit by Congress, the Secretary, and appropriate units of government, all records pertaining to the expenditure of the funds and any matching funds; and (2) encourage, by appropriate means and consistent with the purposes of the Heritage Area, the economic viability of the Heritage Area. (c) Prohibition on the acquisition of real property The Caddo Lake Heritage Area Commission shall not use Federal funds to acquire real property or any interest in real property. 6. Authorities and duties of the Secretary (a) Technical and financial assistance On request of the Caddo Lake Heritage Area Commission, the Secretary may provide technical and financial assistance, on a reimbursable or nonreimbursable basis, to the Caddo Lake Heritage Area Commission for— (1) the development and implementation of the management plan