PUBLIC LAWS-CH. 418-JUNE 4, 1948 38 Stat. 1084 . 31U. .C.i686. Acquisition of equipment, etc. Restriction. Installations, etc. Ante, p. 339. Concessions. Rent, etc., of armory. Ante, p. 339. the storage rooms contiguous to the drill hall as shown upon drawing A-3, first-floor plan, approved by the Commissioners April 19, 1940, as said Armory Board may from time to time find are necessary for the use of the militia. The parts of the armory so set aside for the use of the militia shall be under the control and jurisdiction of the com- manding general of the militia for all purposes except maintenance and repair of the armory. The drill hall and those parts of the armory not set aside for the exclusive use of the militia shall be available to the militia under schedules for joint use made by the Armory Board so as to carry out the purposes and intent of this Act. SEC. 6. In order to carry out the secondary purposes of this Act the Armory Board is hereby authorized, without regard to any other provisions of law- (a) to determine all questions concerning the use of said armory for the secondary purposes of this Act; (b) to enter into contracts and agreements with District of Columbia and Federal departments, bureaus, establishments, and offices and the provisions of the Act of March 4, 1915, as amended (U. S . C ., 1940 edition, Supp. V, title 31, sec. 686), are hereby made applicable to such contracts; (c) to acquire by purchase or lease equipment, appliances, facil- ities, and property of any kind necessary or desirable to carry out the secondary purposes of this Act, and to sell or dispose of any such property so acquired by said Board when in its judgment it shall be advantageous to do so: Provided, That no contract for more than $3,000 shall be entered into for this purpose without competitive bidding; (d) to erect structures or installations in all of such parts of the armory as are not required exclusively for military purposes, and to make such structural and other changes in any such struc- tures as it may deem necessary or desirable for carrying out the secondary purposes of this Act: Provided, That nothing in this Act shall authorize or permit the erection of any structure which in the opinion of the Commanding General of the District of Columbia Militia will lessen the availability of the armory for military purposes; (e) to prepare, maintain, light, and operate motor-vehicle parking lots on such land as is provided for that purpose by the Secretary of the Interior under the terms of section 4 of this Act; (f) to operate or contract for the operation of, such conces- sions, including the checking of clothing and the sale of non- alcoholic beverages and food, as the said Board may deem appro- priate to the purposes for which the armory may be leased: Provided,That the said Board may at its discretion, and with the approval of the Commanding General of the District of Columbia Militia, grant the concession for nonalcoholic beverages and food to the canteen of the District of Columbia Militia, whenever in the opinion of said Board such action shall be for the public interest; (g) to furnish such services to renters, lessees, and other occu- pants of the armory as in its judgment are necessary or suitable for carrying out the secondary purposes of this Act; (h) to rent or lease from time to time, for any of the secondary purposes of this Act, all or any part or parts of the armory not set aside for the exclusive use of the Militia of the District of Columbia in compliance with section 5 of this Act, including any or all structures, equipment, or facilities of the armory, at such rental values as the Armory Board shall determine to be fair with respect to the interests of the District of Columbia, and for such 340 [62 STAT.