I'm not a security or safety trained professional, but off the top of my head a domestic security system maybe including video, top of the line door and window

I'm not a security or safety trained professional, but off the top of my head a domestic security system maybe including video, top of the line door and window locks, advice on car security, who knows what else. All that is completely beside the point though, because none of it is pertinent to whether the advice to get a gun was reasonable.