I believe that very question is being looked into by the US Army at the facility where Bowie al Ameriki is currently secluded. I would not be surprised if the Army takes him into custody and detains him in the stockade at Fort Leavenworth, awaiting an Article 32 hearing. The outcome of that legal procedure under the UCMJ is required to determine if there is enough evidence to refer the case to a General Courts Martial. That's why it makes sense in my mind to send him to Fort Leavenworth because they have detention and legal hearing facilities there to conduct any trial needed.
The other option is to send his ass to Gitmo and hold the hearing there, where he could then be tried by Military Tribunal and shot if found guilty of aiding and abetting the enemy, desertion in the face of the enemy, as well as accessory to the deaths of the other Military members who were sent out to find him.
But then again, we have team Obama, Kerry and Hagel calling the shots here, and the only goal is to make Obama look good no matter what. Any hearing for Bowie al Ameriki will be put off until after the elections, and never if it can possibly be arranged. Perhaps a Presidential Pardon is in order, since the poor lad has already been through so much, and it would be so significant for the President's Muslim Outreach.......