Not FBI, deep state. Need I say more?
Depends on the court martial, according to regulations it could have officers and enlisted on the Jury. I did some reading of the UCMJ regulations found online
This might be notable Baker.
Here is the link for Military Commissions. This is the manual that is used for Tribunals. They require 12 but can go with 9 if there is a lack of personal to juror.
https://www.loc.gov/rr/frd/Military_Law/pdf/manual-mil-commissions.pdf
Well they moved MP's (guards) to gitmo so they are probably starting to add the bad guys too. plus there was already people stationed there.