Drearyweather, growing up in the 60s or 70s we were always told to "rely on Jehovah". Guns for personal protection, classes in self defense, or anything like that was considered not relying on Jehovah. When persecution came you'd be totally out there and vulnerable (no bunkers expected in those decades) but Jehovah would send an angel to protect you. Of course like all things JW, there exists what is in print and what the rules REALLY are (and everyone knows what the rules REALLY are).
I agree with StoneWall that it seems a contradiction that the facilities in Warwick have so much security. (I saw this first in the A&E show about Cult Belief, when they went to the headquarters to try to speak with someone). Never having visited Warwick, I didn't know. It really looked like a secure corporation (or cult) campus.
It makes practical sense to have security, but coming from a grown-up-in the bOrg perspective, it is not what you'd expect.