He has done a good job.
Anyone who does an objective review of the CIA's performance over the past several decades, will not be very laudatory of the Agency's performance. Tenet has been in charge of the Agency longer than most of his predecessors. He lacks vision and was selected for the job by virture of his political connections and his bureaucratic skills. He is the classic Washington bureaucrat and insider. Tenet is not the person capable of reforming the Agency. He has done a poor job.