Oh, and on roleplaying...
We setup a MVA scenario for the arriving pumps. The gas prop car (gutted car with LPG fittings to squirt fire) was fitted with DC license plates. That makes it a diplomatic vehicle, and therefore sovereign territory. The usual rules don't apply, the occupant has to give us permission to help, and if they say no, that's that. We have no legal authority (if they're unable to give consent, i.e. unconscious, then we can proceed based on the concept of applied consent). So that's the obvious prob the arriving OIC has to deal with. But to make things more fun... The other vehicle was mine, and I had a meth lab in the back. They put some powder on the back bumper, and I got to play doper. That was awesomely fun. I put some powder under my nose for good effect, clutched a beer bottle, and bounced around inside like a whirling dervish, occasionally popping out the window all wide-eyed and yelling things like "fuck off fire pigs". When they tried to remove me I scrambled into the back and kept getting paranoid at them. Total comedy. Role playing is so much more fun than being the officer in charge. :)