Former Joint Chiefs chairman says it happened during the Clinton administration . He also said that he was told by a former CIA director, who is now an advisor to Hillary Clinton, that there were no such tapes and they had been destroyed in 2001. New codes were quickly given to Clinton , Shelton says . Efforts to contact a Clinton spokesman were unsuccessful Thursday .
Former Joint Chiefs chairman says it happened during the Clinton administration . Shelton says a card giving the president access to nuclear launch instructions went missing . New codes were quickly given to Clinton , Shelton says . Efforts to contact a Clinton spokesman were unsuccessful Thursday .