SWAT is very good now at surprise, knocking down doors and attacking with massive force & firepower.
Not so good when confronted by multiple well armed and able citizens fighting for their rights and their lives.
I predict many dead swat very quickly.
As I said above it will be SWAT and other thugs. They will also use the BATF, FBI, DEA, and if things get real tough the Guard. Take a look at what they did to Pastor Koresh and his church members.
In New Orleans one platoon of Guardsmen said they would not obey that illegal order. Their superior passed that information up the chain of command and they were never ordered to confiscate legal guns. Other guardsmen were not as honorable and joined the police in the illegal acts.
The government will not use UN troops. They will use Americans who will willingly violate their oaths.
I have no doubt that good Americans will send many of the thugs to hell. I’m just not sure the decent people can win.
I’m also pretty sure that if they used UN troops they would face many more citizens who would resist with force and more troops who would refuse the illegal orders. It is easier to get people to fight against foreign troops than American cops and troops.
They'll succeed at first. No doubt about that. Then they'll start getting dead. This will evolve very quickly to the sort of 'ring of fire' that surrounded the British as they made their way back to Boston from Lexington. In fairly short order, it's going to be a risky proposition to roll your SWAT wagon down the street. We Americans are nothing if not fearless and inventive.
The lesson to the confiscators: stay home - stay alive.
Meanwhile it's going to be suit-hunting time. The lesson to the suits: tyranny is both expensive and fatal.