My wife and I had a person following us in Nashville. I was watching him out of the corner of my eye. I was pacing us until we passed the bus stop. Then as he started to make his move, I turned and faced him with my hand on my knife. (couldn't carry as we had been drinking) When he saw that I wasn't going to be a victim, he cussed and turned away.
Another person walking told us we were lucky. I felt like it was situational awareness that kept us from being hurt.
Finem Respice Consider the end
Principils Obsta Resist the beginings