Originally posted by: bradruth
Originally posted by: bunker
bradruth, I'm surprised. Have you never heard of a mutual aid agreement?
It is quite common for neighboring jurisdictions to have a "mutual aid agreement".
Jurisdiction 1 can operate within a portion of jurisdiction 2's area and vice versa.
Mutual aid agreements come in different forms and degrees. I haven't personally seen any county-to-county mutual aid agreements. What I've seen are agreements that are between border cities or between agencies with already overlapping jurisdiction.
For instance, my department has an agreement with the University Police Department. Their jurisdiction is technically statewide because they are employed by the state, but their actual enforcement is generally limited to the university and surrounding area, unless we request an assist from them. We are free to enforce throughout their jurisdiction. They also contribute 2 members to our area Explosive Ordinance Defusal team (bomb squad). The Sheriff's office contributes 2 members to our Special Enforcement Team (a "SWAT" team). We also assist the "east side" when requested, which crosses STATE lines.
All that said, we do not normally cross to the east side, nor do they cross to ours. The S.O. rarely does any enforcement within the city and we don't go outside the city unless we're engaged in a pursuit. The UPD is largely limited to campus and the surrounding area, while we are free to go throughout the entire city.
Edit: Oh, and highway patrol runs traffic within the city as well (generally to get DUIs).