Good posts, both of ya
My feelings pretty much echo yours. Basically, I'm going to have to be fairly sure as to what is going on before I'm going to jump in the middle of something.
So, let's get a little more specific as to the nature of the incident (since the articles dealt with "active shooter" situations).
Say you're in a mall or other public place and you're armed (you always are, right?

). Let's assume, for the sake of avoiding extra variables/considerations, that you are alone (no GF, wife, or kids)
Scenario 1 is that there is a person actively shooting (or shooting at) people. What is your response?
Scenario 2 is that you've heard or seen the guy shooting but at this moment in time he is not (maybe he's reloading, whatever).
-Do you try to get him to surrender?
-Do you make the shot?
-Do you do something else? what and why?
Assume that in both cases, you are in range for a good shot and have the time to draw your weapon. (yes, we're assuming a lot here but I'm trying to get to the heart of the issue w/o being "bogged down" with all the variables that will probably be present).
Personally, In either of these cases, I feel that the proper action would be to engage the shooter in order to stop him. In Scenario 1, it is obvious that if someone doesn't stop him, he will continue shooting others until he either tires of it and shoots himself, or until the police finally do something. In this situation, hesitation on my part will only enable him to kill more people.
In Scenario 2, once again I feel the proper response is to engage him. To take the time to call for him to surrender is a big gamble. For one thing, I've lost the element of surprise and drawn his attention to me. Secondly, the desirability of his surrender is, I feel, outweighed by the consequenses. If he kills me, it's likely that there will be no one else to do anything.
what do y'all think?