Re: Superhero Legal Disclaimers
Force is correct.
Officers do not need to say and or do anything to take "action," if it puts them and or others at risk.
The official warning is pretty much universal, if given at all
(Insert Agency Here), don't move.
Police, don't move.
Stating who you are gets rid of any need to talk all the legal nonsense. You never as an officer have to explain that you are empowered by the government to take action or what have you. You are the police and have stated so. A "reasonable" person knows what police can do as far as arrest, use of force, etc. This removes the need to cite Criminal Procedure Law of the particular state or the Federal Government when you take police action.
Part two, don't move, is stated because that is it, game over they are going into custody. The verbal warning is to hopefully give them the chance to comply and go peacefully.
So in a nutshell for a "disclaimer" my suggestion is to keep it short and sweet.
Who you are, and what you want.
In your most heroic voice "Bureau of Metahuman Affairs, I'm taking you into custody."