Keep in mind though that this is a distopic future. A street cop or security guard won't hesitate to discourage riff raff like gangers, SINless and the rest of the disenfranchised with a few hits or a blast of Liquid Pain brand pepper punch, and higher end ones are willing and authorized to shoot someone, reacting more like trained soldiers then rent-a-cops.
If they think it is a battle they can win, sure, if it's not, forget about it. Acting like a trained security guard, street cop, or whatever means you should know your limitations, and know that there is safety in back-up, if it's a problem that you can't handle without breaking a sweat.
Try to walk up to a hot lab and you are less likely to run into someone there to observe, report and discourage trouble then some running though Shout-Show-Shove-Shoot ROE in their head while they point an assault rifle at you.
Sure, and you'll have the better skills, training, weapons, armor, salary and cyber to suit your position there, and also have a better back-up to call in when things look like they are going to get too much.
It's all about playing your NPCs to their role, abilities and their limitations.
I have to chime in here being Security and all. I find that there are 4 tiers to security. The lowest with least chance of altercations are the paper pushers. These are the dispatchers, access control, and IT security guys. These guys are the nervous system of security. Someone wants to get in, well these guys figure out if they are suppoed to be there. (Mr. Johnson, I have a Spike here to see you. Alright, I will let the boys know.)
Then there are the Security Guards. These are your observe and report guys. Their whole job is to watch and listen. If they have a weapon, it's probablt just a flashlight they use as a makeshift club. (Dispatch, I got a lab door that is unsecured, I'm going to do a walk through...CRAP! I need backup there is a Troll in here and he doesn't look happy. Sir, Please put the axe down.)
Security Officers are trained to go hands on or use weapons. But nothing bigger than a heavy pistol or maybe shotgun/AR with SnS rounds. Leathal, maybe, but main purpose is to detain or subdue. (Dispatch this is 241, I have spotted the BOLO and am engaging. Sir, put your weapon on the ground and step away, you have 3 seconds to comply... [bite me rent-a-cop]..Have it your way **opens fire** Target is down, securing for PD)
High Threat Response is something we don't have now. Well not on anything short of a military facility. These are the SWAT of Corp. Sec. These are your Red Sams, your elite of the Elite. (We have spoted the suspect, opening Fire)