I don't know if it's still the case, but as of ten years ago, Massachusetts of all places did not have a security guard license. I did armed security with my LTC being the only documentation.
When I moved to New Hampshire, I had to get a guard license. It was no big deal, I think it was around $30. I had to qualify with the weapon I intended to carry (same thing here in Connecticut) but the instructor only charged me $40. The pistol permit itself was $10.
Connecticut is the worst. You have to have a basic security guard license, which is $100 for five years. You have to have a pistol permit, $70 for five years, and you have to qualify with the pistol you carry every year and shell out another $62 to keep your "blue card" endorsement. This year, I have to renew everything, so that's $232 down the drain if I don't get another job soon.
And that's not even counting the actual pistol qual. When I was doing civilian security for the Air Guard, I qualified with one of their M9s. When I had to branch out to another state site, I needed to qualify again with the weapon I intended to carry. Fortunately I found an instructor who did it for $40; most in CT charge around $200 for the same course. So if you're a brand new guard and you don't know anybody cheaper, you'd have to shell out almost $450 before you could even start working. Just another reason Malloy can go sit on a tack.