A while back, I did a search for the manuals for vehicles like this and figured out they, by default, they are all keyed alike. So, unless your local law enforcement agency is filled with intelligent, forward thinking individuals bright enough to get them rekeyed (and can convince the accountants/comptrollers to pay for the rekeying), you can figure out what the key is through the manuals (because pigs are idiots and host them unsecured) and order them on Amazon or whatever.
Would be funny if they were all at the bottom of lakes and canals
Also, all of your local cop cars are probably keyed alike, too. And busses don’t have keys at all.