Not saying he was homeless. But the homeless around here carry all kinds of creative edged weapons. Screwdrivers are popular because they aren’t technically weapons. And you never know when one of them might go sideways. Best to be aware of your surroundings, and armed.
This also tells us you don’t need to carry an AR-15 to be dangerous. With a hatchet you have a semi-automatic acting weapon that strikes as fast as you can swing it. If you are good at ax throwing, it can have some range.