POI question

I recently built the stations required for Madison County Fl. Since I needed to wait for the stations to recruit personnel I didn't put any extensions on the stations. I also have not assigned any POI's for that county and the county also has its own 911 center. Today I got a wildfire call. Of course, I had to scramble and add extensions and apparatus to handle the call. My question is how did this happen. I have the box checked to only use my POI and there were no wildfire extensions on any of the stations covered by the 911 center????

Small wildfire that grew into a medium wildfire.

Recently I did that, it seems to have corrected the problem. Still testing.