Some other things that might help, scale firehouse has a buncha tutorials, that aren't restricted to fire trucks but are extendable to all emergency vehicles, and some of them could even be useful for military modeling.
http://scalefirehouse.com/pages/tutorials.html
In addition somewhere on that website are documents which you can download and print out including caution tape, maps, handbooks, etc. I can't find them right now on there. I believe I still have them on my hard drive, if I can find them I'll PM you so I can send them to you.