Here is one example of someone that seems pretty able to protect himself, and at the same time, make life for his family, his neighbors, pretty safe from ND's
I never want to have some student of mine, walk up to me, with a tearful story about them having an ND.
When safety equipment, is more dangerous , or as dangerous, as the threat, one has to look at the safety equipment, and ask, how could an ND happen, how could a grandchild get ahold of this, how................... could something go wrong, and do whatever it takes to secure that equipment, so the unthinkable never happens.