im not too worried about bullets, id be in the bunker if it came to that. i like it for protection of robberies and break ins. the question i have is, do they lock? if so, how? my guess is you could get them thicker steel too if you really wanted it and wanted to pay the money. i like them for when you leave on vacation, possibly at night time, and definitely if things get a little hairy its one more line of defense.