Huh. None of your first three points is meant to be illegal.

- coordinating using a Signal group

- bringing firearms, body armor, and first aid kits to a location just outside a federal facility

- taking up a concealed position along a tree line

For you to even list them shows a fascist bent.

As for fireworks, they might not be illegal either. The only possible crime is the shooting, and only if it was not done in self defense.