Can Training Overcome Stress?

If you watch the following video and listen to what the reporter says you would have to come to the conclusion that having a gun is worthless because you are just going to get shot anyway because you would overwhelmed by the stress of the encounter.  Good point - but what if you train on a daily basis to function at a high level while under stress?  Will this improve your chances for survival?  I think so and I think that the people that train in a similar manner stand a much better chance of surviving than most, if not all, civilians.

Train the way you intend to fight - hard, fast and unrelenting!