Reblogged from kR-15: info and resources for firearms enthusiasts:

Situational Awareness is made actionable using the OODA loop. If you don't know the OODA loop yet know this much: Col John Boyd coined the term- aka Boyd Cycle. It has 4 phases: Observe, Orient, Decide, Act. In some ways the Observe step is the most important for the average American.
This is because if you can effectively identify a potential threat before they get close to you- or better yet even notice you- you have the opportunity to avoid any unpleasant interactions.
Make your training fun!