@whit That's what they wanted you to believe.
The truth is that any agency in Peoria County can talk to each other with a push of a button or turn of a knob. BUT there's a catch....That's assuming each agency had previously agreed to such an option and have signed a authorization to let each other's talk groups be programmed into their radios.
So in theory, a Peoria police officer and a Peoria Heights fire fighter could talk to each other, but they don't. However, a Peoria fire fighter cannot talk to an East Peoria fire fighter without using a different radio.