LOL, I am ABSOLUTELY positive I want to keep that job. Especially nowadays with such gloomy times ahead.
I want to be prepared but I still try to be realistic. I mean, there is a very small chance that something will go wrong at my workplace. Even less chance of anything happening to me or while I'm there. But losing my job would be a 100% surefire way to put me in an extremely difficult situation, financially and otherwise. Even more so because I have a very specialized profession - I'm just really happy that I got a nearly perfect job and would like to keep it if at all possible.
Frankly, none of my colleagues would freak out seeing a tire iron in my office, probably because I don't think anybody knows what it's used for. Also, it doesn't have such a bad rep around here, apparently it's not a common improvised weapon in the streets so there is little if any negative connotation. And being the resident mechanical guy whenever the janitor isn't available I've been known to always keep some tools at hand for fixing whatever might need fixing so that would be easy to explain.
But a crowbar would be a different story in a high security place like ours (wouldn't want to speak about it too much publicly but a bank would be a pretty close analogy).
I will definitely try to persuade the folks in charge to take our safety a bit more seriously but it will take time. Transferring to the ground floor is not an option - there is a different department down there.