There is something seriously wrong with them if they quote braveheart as their inspiration.  They created this situation and they have the power to end it....real simple - put down your weapons and surrender - obey all commands - make no threatening moves.  Their inability to think clearly and calmly and realistically is what is going to cause this to potentially go bad.  They made an armed takeover of a federal facility and they think they will go home without repercussions?   If they do then they can use an insanity defense.