It depends on the circumstances, as always. My brother, who is a specialized diesel mechanic and is one of the few people on the planet qualified to operate a

It depends on the circumstances, as always. My brother, who is a specialized diesel mechanic and is one of the few people on the planet qualified to operate a seismic vibrator (https://en.wikipedia.org/wiki/Seismic_vibrator https://en.wikipedia.org/wiki/Seismic_vibrator) used for oil exploration just got back from a month of work in Somalia. Their small team (20-50 people) were accompanied by ~450 guards armed with Kalashnikovs, 200+ of which were on duty at any given moment, and had a very direct policy of a warning at 50ft, and shoot to kill at 25ft on approach from anyone that didn't identify themselves. When he's scheduled to have a similar stint in the Democratic Republic of Congo, they have similar arrangements. It's worth noting that this level of security isn't something arbitrary, but is rather in response to the environment that they are put in. I don't think they have a single guard in Northern Canada, for example.