I voted "yes" for everyone... with the caveat that the training for LE/Security personnel heading towards the sound of gunshots (our D.A.R.T. program) needs to be significantly different than that for the armed person who happens to get caught in a situation (CCW Tcactics or Defensive Firearms Use in Public).
-RJP
I think this is exactly right. For civies, what awareness clues or techniques would tell which way is the right way to go to get away? If you are standing next to an exit in the mall, that's easy...maybe. If you are in the middle of a mall or in a building like in India then things get more testy.
At any rate, I think from a business and personal interest standpoint a class in Defensive Active Shooter that draws elements together (repackaged from other courses) could be a helpful course.