There are a number of concepts, strategies, and charts out there you can use to shape the way you mentally approach a threat. Whether you choose Col. Jeff Cooper’s Color Code or USAF Col. John Boyd’s OODA loop (below), one thing remains constant: you are improving your reaction time. Cooper’s Color Code charts levels of awareness using colors – white, yellow, orange, and red – while the OODA loop is an acronym and stands for “observe, orient, decide, act”. Find a method that works for you and train using it. He who acts or reacts the fastest, survives.