good story on the mugging event! Nice to hear you handled it well. I carry a variety of self defense items. Mace will put most large men down fast. A taser is also nice, you can get all kinds of them these days, ie ones that look like cell phones ect. My rule is, if they have a gun do not resist, otherwise I will put up a fight. Each situation is different though and a mob with weapons is something you run from!
Travel SAFE!