I would think that any industry where shrapnel could be present: Civilian weapons R&D, mining where explosives are being used, private security work, civilian

I would think that any industry where shrapnel could be present: Civilian weapons R&D, mining where explosives are being used, private security work, civilian firearm instruction, protection for targetted individuals e.g. Malcom X / MLK, Journalists in conflict zones (you saw them warn in DC during the protests as well) Albiet the U.S. has and always will be a special case due to high firearm ownership and rather open ownership of those sorts of things.