Buster they are not para-military as you suggest. They are protecting federal buildings from the wilful destruction of highly organised anarchist and Marxist activists.
The teams are comprised of federal marshals, border protection, and other federal agencies. Federal buildings in Portland sustain nightly arson attacks also the anarchists are using high powered lasers. It’s okay because the main stream media tells you these are peaceful protesters, whilst their previous convictions suggest otherwise. Federal prison time comes with no parol. These actions will continue until Soros gets what he wants.