Tim:
Holy **CENSORED**! Wow! I was just about to go onto google and look for CAD simulations

This is FANTASTIC!!!
And, just, throwing an idea out there. Say, with your Fire Dept. units, in the daytime, starting around, 0800 or 0900, units start calling out of service for random things, like:
1) Training
2) EMT/Paramedic Re-Cert.
3) To the Shop
4) Public Relations
Moreover, you could have several different statuses:
1) Available in Quarters
2) Available on the Air
3) Delayed response (Aerial up) [Aerials only]
4) Out of Service [with several different reasons]
5) Responding
6) On Location
7) Returning to Quarters
and more.. I'm just throwing some things out there for ya... PM me if there's ANYthing you need. If I don't know, I'll try to learn it to help
Eli