Here is a 2min (nearly) of Emergency 4. This game is an RTS Simulation game in which you take operational command of all the emergency services, Police,Fire and EMS (Also technical such as vehicle recovery and cranes etc) to deal with incidents at random. Some mods also feature the National Guard. I will be uploading more recording and updating this post when I can
http://www.youtube.com/watch?v=Q2m0vNWh84Q