Some basic truths (thankfully learned from others on this forum and TFL, numerous instructors, plus experience):
1. If you know you're going into a war zone, best option is to not go. You don't own the place. Quit.
2. If you feel compelled to keep the job, and enter the war zone, then carrying will at least give you the option to survive. As many cops will tell you ... better to be judged by 12, than carried by 6. See
Thunderwear and
Smartcarry for 2 good deep cover options ... I've used Thunderwear for years, and they wear well ... no one will know.
3. For civil and criminal legal reasons, potential of a missed shot and innocent life endangered, and employment issues ... don't use your firearm unless you truly must do so to protect innocent life. Following such use, expect to be arrested, and say nothing except that you need to speak with your attorney.
4. No large company today will ever tell their non-security employees they can carry concealed. The current legal / insurance environment will not permit it, no matter the personal philosophies of the executives / owners.
5. IF you must use your firearm to defend innocent life, also expect to be fired ... while some of the executives, and many of the policie officers end up respecting your action. Large companies get to be large companies by recognizing economic reality ... and the current legal system requires consistent application of policy.
Hopefully the LEO's will finally get these perp's. However ... you and your co-workers are taking grievous risks. Any a**hole that is willing to wave a gun around during commission of a crime is not someone you want to trust with your life. At least update your resume and look at alternatives ... you are in an untenable situation, and these stories often do not end well.
Good luck.
Regards from TX