Pub. L. 100-456, div. A, tit. II, pt. A, sec. 206
EXTENDED AIR DEFENSE
SEC. 206. EXTENDED AIR DEFENSE Of the amount appropriated pursuant to section 201 for Defense Agencies, $25,000,000 may be obligated only upon approval of the Director of Defense Research and Engineering for the purpose of research and development in connection with anti-tactical missile systems. If any such funds are made available to a firm in an allied country, those funds may not be obligated until the Secretary of Defense enters into a cooperative program with that country for that purpose.