Since September 11, 2001, Seymour M. Hersh has riveted readers -- and outraged the Bush Administration -- with his stories in The New Yorker, including his breakthrough pieces on the Abu Ghraib prison scandal. Now, in Chain of Command, he brings together this reporting, along with new revelations, to answer the critical question of the last three years: how did America get from the clear morning when hijackers crashed airplanes into the World Trade...