How well will you protect your vaults?

I'm thinking about creating a business, but first I would like to know how much apparel can affect combat. I was wondering if we could create tactical gear, like bulletproof vests, t-shirts with hidden holsters, etc., and if we can, how much would the vests protect you, or how obvious holstered weapons would be.

I thought I heard there were no armored vehicles? Correct me if I am wrong, but this might pose a problem to your company.