He's the most-listened-to personality in the history of U.S. radio, but Rush Limbaugh feared for his life recently and said he knows he faces destruction at some point, to the delight of some of the American public. In an e-mail sent to Zev Chafets, author of the new book "Rush Limbaugh: An Army of One," Limbaugh admitted, "I know I am a target and I know I will be destroyed eventually. I fear that all I have accomplished and all the wealth I have accumulated will be taken from me, to the cheers of the crowd. I know I am...