This is an excellent situational awareness lesson and they do it in under 3 minutes. Stop the video after the first segment and ask yourself what you would do in that situation- part of strong situational awareness skills entails quick adaptation in stressful situations.
The scenario used here is an extremely stressful situation – more stressful than a typical DGU in the US – (DGU: those 1.2-2 million times per year that law-abiding citizens use firearms to defend themselves and their loved ones). However the extreme nature of the scenario is a reminder that with practice you can make the right decisions in any situation. Remember that OODA ends with Action.