I think the issue that Bill brought up bears repeating- 75% of the Guantanimo detainees who went through military tribunals (33 of 44) were released. None of the 1993 WTC bombers were released. McVeigh was executed.If you want these people prosecuted, you need to do it in a criminal proceeding. Historically, a military tribunal gives them a better chance of getting off.
From David Frackt, one of the lawyers representing Gitmo detainees before the federal court of appeals.fas.org/sgp/crs/natsec/RL33180.pdf