mj, The quality of investigations and your concern aside...unless you are covered under some kind of municipal immunity be prepared to become a party to some litigation, be it liability or subrogation, defense or prosecution. No reflection on your talent, but the fact that you are on the scene makes you a party. The fact that you are an 'expert' makes you even more so! This might be OK with you but to some it is a harrowing experience to be caught up in it. Just FYI!