after the date on which the Secretary and the Attorney General jointly prescribe regulations under paragraph (1), the Secretary shall fully implement the program. 3. Prescription drug take-back program for veterans and their dependents (a) Definitions In this section: (1) Covered controlled substance The term covered controlled substance means a controlled substance that is listed in schedule II, III, IV, or V of section 202(c) of the Controlled Substances Act ( 21 U.S.C. 812(c) ). (2) Eligible person The term eligible person means— (A) a veteran