I am having this same problem where the fire department show's up and does not leave after call is ended. Did you figure this out? I have disabled the gas station fire in enable all interiors, I disabled the "never wanted" in trainer, I have completely reinstalled all mods related to UB,LSPDFR,Call outs etc and still same problem. I use to never use the fire department for anything until recently when I downloaded the fire callouts plugin, I have removed it and called the fire department without that plugin and it does the same exact thing. It's really annoying, you can drive to one side of map and come back, they still standing there or spraying lol.