I have thought of something. FBI can have an assistant tac unit like CAT, but in the FBI class. FBI cat class would have a shotgun and the gun they have, and be able to assist the real tac teams if the commanding tac unit allowed it. They would not be able to control tac units, but would still get action if given permission. They would get the same armor and HP as CAT units do. I think this would be more fair, considering we can guess people in FBI will support this, and tac teams won't. This idea, however, could manageable. Of course, it would not be easy getting into this new class, but worth it for FBI members.