UPS has declared all their buildings "gun free zones". So how did a shooting occur in a gun free zone?? I KNOW.....because gun free zones don't work!
So you want thousands of your fellow coworkers... all of them disgruntled, pi$$ed off, and getting the shaft from Mgmt on a daily basis... walking around armed every day? That would only serve to increase the frequency of things like this. While, yes, 99% of them aren't going to start shooting, it only takes one guy to lose his $#!+. We're all constantly being pushed to the edge of sanity as it is as a byproduct of corporate idiocy... adding guns to the mix is only going to make things worse.
I don't care if people own guns... but we certainly don't need them at work.