In regards to paranoid or prepared, I think the former leads to the latter.
When I first started carrying as a private citizen, I thought about these scenarios all the time. I still think it's a worthwhile excercise, but I find that I only think about them in threads such as these. I relate it to sports - If a quarterback throws a football to me, what I'm going to do next will depend on the preperation that I have done up until that moment. All of the time studying the plays, knowing my teammates, hours and days of practice, all of it comes into play and I'm not going to be actively thinking about any of it at the moment. Real life happens quickly and has often has too many variables to anticipate. It's just going to happen, and the outcome will depend on my training up until that moment. My paranoia of failure lead to preperation for success.
Okay, back to the scenario. 'Looking forward to the responses.