I'm sorry to be repetitive, but you are using a connotation based on your home state. Maybe you've only lived in one, I don't know.
I've lived in several states, and things can be different, especially in the south and southwest. And most especially in Texas.
In Texas, a state-issued Peace Officer certification is above and beyond a regular police officer, worthy of extra pay:
Police Officers who have a Master Peace Officer Certification will receive the following additional pay incentive.
Master Peace Officer Certification $90 per month ($1,080 annually)
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www.roundrocktexas.gov/h ··· page=786-----
More broadly:
Years ago when I lived in the neighboring Virginia cities of Norfolk and Portsmouth, the people in one city said "hot dog" and in the other city said "frankfurter", and this was a big deal to them.
You can't assume that your use of language is the same as someone else's especially in a different place.