???(a) In General.???Through the national stockpile under section 121 [now section 319F???2 of act July 1, 1944, 42 U.S.C. 247d???6b], the President, subject to subsections (b) and (c), shall make available to State and local governments potassium iodide tablets for stockpiling and for distribution as appropriate to public facilities, such as schools and hospitals, in quantities sufficient to prov