There is a provision in the law that allows private security guards, etc, to get a permit to carry. I got mine in 2001 and back then it cost about $500 for the course and fees, and then you have to go back every 3 or 6 months to requalify at the range, which was another $50 (depending on what the range is charging for ammo) or so. Permit is good for 2 years, so you're annualized cost for the permit is about $300.
So, someone less intelligent may argue, "see they're being thoroughly trained, tested, etc so they're safe!" Well, let me tell you that the course I took the instructors cut corners. what was supposed to be a 14-hour course was done in 6. The test was open book, and if you got a question wrong the teacher would give you the answer and let you fix it. I won't say I learned nothing valuable... but I certainly don't think I got my money's worth.
Just another way for the state to tax people to death.
Oh, and that permit is ONLY good while on duty, or when directly
en route to/from the job site.