the Department of Defense or a component thereof in contravention of the provisions of section 130h of title 10, United States Code. 8090. Notwithstanding price or other limitations applicable to the purchase of passenger carrying vehicles, appropriations available to the Department of Defense may be used for the purchase of: (1) heavy and light armored vehicles for the physical security of personnel or for force protection purposes up to a limit of $450,000 per vehicle