THE OODA LOOP
OODA is an acronym for observe, orient, decide and act.
The OODA Loop is a fairly common and simple approach to resolving tactical situations. You first observe the surroundings and the problem, then you physically orient yourself with respect to the problem, which might mean simply getting out of harm’s way for the time being, then you decide the course of action, and then you act to implement your decisions.
This “loop” will continually change and evolve to adapt to the problem until the problem is resolved. It is the essence of gunfighting. The mind processes and decides based on sensory input, and then the body physically carries out what the mind has just processed.