The real question is:
What is Chaos scared of?
Does he have enemies? Does he live in a bad neighborhood?
I will agree that a knife is certainly better than nothing. However, under what circumstances would a knife be better than a firearm?
You can't carry in Cali? Chaos is a decent sized fella. Bhank, would call him obese. But it's either fists or guns in most situations, between derelicts.
In rare cases, between derelicts and normal human beings.