Posse comitatus.
Posse Comitatus Indeed.
You are the first I’ve seen to mention this in a thread about this.
I would love to see Military members armed when among the general populace if they have the necessary Training and Maturity to know their role. It is great that a 18-20 year old has combat medals from Afghanistan; but another thing entirely if you put him in a position where he may have to use a local LEO’s judgment.
If he shoots a civilian, will he be tried by UCMJ or local ordinance? Maybe in the Hague?
It is dangerous if any Federal Officers are identified immediately by locals as “the authorities”.