The two greatest words in the English language!
There are other people out there who conduct human behavior training, but no one has the evidence to show that their programs actually work.
The scientific basis is like no other; conscious awareness is unnecessary to detect and react reflexively to a threat. Certain human and environmental cues and clusters will evoke faster reactions and responses than conscious awareness.
Factors of the unconscious mind coupled with electrochemical neurotransmitters are the innate, intuitive, preprogrammed human survival and defense responses to external threat stimuli.
Please see the studies below for more information regarding the programs that Greg Williams has created in the past.