Originally Posted by -King-
What exactly should he do? Just keep walking and pray he doesn't get shot in the back?
That's pretty unreasonable.
He should keep walking and stay in well lit and/or highly trafficked areas. Praying is optional.
If you're really worried that your potential assailant has a gun, you'd have to be an idiot (or a badass martial arts expert like the characters Jean Claude Van Damme plays) to turn around and initiate a conflict.