I think some of you guys are forgetting -- security guards are the cops in Shadowrun. Knight Errant? Lone Star? They're just security companies that have gotten really big, lucrative, contracts (for Seattle, for instance).
It's not like today where you can draw a firm line and put trained, professional, cops on one side, and lazy, low-wage, security guards on the other (or whatever stereotypes you prefer). "Cops" are just corporate security with a contract for whatever street you're on. There's no reason to think that corporate security is out of shape, under-armed, underpaid, not trained, or whatever...any more than there's some reason to then think the same about "cops."
Having worked in the security industry for some 5-6 years before leaving it due to health issues (I have a bad back), I find the stereotype of the "lazy guard" to be as inaccurate as most. The majority are hardworking people who are just like anyone else, they have a job to do and take pride in doing it well. That being said, I found that there were three main types.
1. Ex-Cop/Former Military - Now, while the police are now security agencies that doesn't mean that their personnel work for them for their entire careers. Just like any position, employees are moving between the corporations through various means for various reasons. And not always by burning their bridges behind them. And in Seattle, some of the old Lone Star cops have been rehired by Knight Errant, but not all of them. But you can bet that those that didn't are still good buddies with their friends who are, and are getting chummy with the new blood.
2. Change-of-career type - This is the category I fell into. I'd been working IT Support for over ten years and was getting nowhere, mainly due to politics. So, I decided to take advantage of being a 6'4" 220lb Maori and went into security work. Still, I paid attention during training, and paid even more attention on the job. I learned my job well and was treated with respect, often being placed in charge of security.
3. The Scrappy - Oh gods, save me from these schmucks. It's not the 30+ with a pot-belly who is a security team's weakness. They can still pay attention and call in problems. No, it's these twenty-somethings who are all bright-eyed and bushy-tailed. So eager to do well and be the hero, they are the first to resort to violence, the worst at conflict management and a pain in the @$$ for everyone else on the team. But, you need 8 people for the site and you can only find 5 from the other 2 groups, so that means you have 3 scrappies to deal with. With time and patience, a scrappy can be molded into a good officer, but most don't have the patience or attention span.
"Remember that your opponent is rarely a villain in their own eyes, they're just some slot doing their job."