Single Six, I think if it makes you feel safer, at least for now, then why not? Like some others have stated, you can never know when something bad can happen, it can be anywhere on earth at any time, any place. The vest is just like a firearm, better to have it and not need it, then to need it and not have it. Chances are very high that you will never need it, but being prepared never hurts. Do what you feel is right, and follow your instincts. The evil that exists in this world is simply unbelieveable. The best defense is a good ofense, so do what you feel gives you any advantage.
And thanks for your service!