Gwen Ifill examines the debate over trying terrorists in military rather than civilian courts with George Terwilliger, former deputy attorney general for the first Bush administration, and Laura Murphy, director of the Washington office of the American Civil Liberties Union.

The following is the full text of the FBI document released Friday that profiles the "linguistic and behavioral assessments of the person responsible for mailing anthrax-laden letters on September 18 and October 9, 2001."…

Margaret Warner examines the anthrax investigation with Stephen Engelberg, investigations editor at The New York Times, and Vincent Cannistraro, former head of the CIA's counter-terrorism unit.