Neat idea. Even our little police force was gifted a military vehicle by General Dynamics. Not sure why. We are a rather small town. Perhaps the little old ladies at the bingo hall were getting out of hand. The truck is a South African ( I think ) light armour transport with land mine protection. Exactly how it came to small town Canada, I'm not sure. I guess my point is that you could make just about anything you like fit the bill. You are telling a story, just have a good back story to go with it!
Have Fun!
rg 31 nyala by Tim Bowers, on Flickr