A self-funded, self-supporting vigilante firm private agency which can act as a legal authority and law enforcement power, or as an official military outfit, even with minimal (if any) ties to actual government/military/police organizations. Agents can act as fully deputized and authorized agents of the law and/or government without bothering with official credentials, pesky background checks, and so forth. The strike force can consist of a One-Man Army or an entire Redshirt Army. The agency might have its own rigorous training regimen or simply recruit former soldiers and policemen.