I left a police department in the suburbs of Kansas City, MO in 1993, and moved to Tennessee in 1998. At that time, your law enforcement authority only applied to the entity that you worked for, (town, city, county, etc): therefore you had no arrest authority outside of your jurisdiction. On the Kansas side of the border it was different. You had arrest authority anywhere in the state as long as you were a state certified LEO.
The question is: how is it here?
I ask because I see posts about LEO's that are clearly out of their area of responsibilities getting involved in areas that are not theirs. Example: The wildlife officer in a Hendersonville store calling the police about the member who was carrying open, and then getting involved in the Terry Stop by asking the member questions like his SSN. I'm asking for my own edification.