Overall great callouts, realistic and creative.
I have to agree with the comment above, that some callouts cannot be triggered.
In addition, as for the homicide investigation call in Davis, the AI officer vehicle's spawn point is slightly misplaced, the vehicle is spawning inside of the fence on top of the lawn. (please see attached screenshot below)
I also noticed sometimes callouts will be automatically disregarded as soon as I picked them up, even when I was close to the callouts locations.