His response to my inquiry was...
Starting in the early 80's and on through the early 90's, I studied under and later became, a west coast representative for ( "Chuck Taylor" American Small Arms Academy.) Proof of this can be gained by obtaining copies of "Combat Handguns" from the 90's. As an example I site, " Combat Handguns" the edition of June 1990, page 68 & 69 where I am listed as the contact person for Chuck Taylor ASAA classes being held in California. I do have some older copies in my files if proof is absolutely necessary. More over I have all class records from the 80's & 90's.

Also, I am listed specifically, by name in the book "The Tactical Advantage" by Gabriel Suarez, in the section titled "ACKNOWLEDGMENTS " page IX.
There I am labeled as a "Warrior Scholar" Further more, there is a picture of me on the front cover holding a large knife in an aggressive stance. As well as, another picture inside the book itself.
In the mid 90's I was recruited by Mr. Taylor to be an instructor at the new firearms school "Front Sight" where, Mr. Taylor held the position of Director. While at Front Sight, I was an instructor in all small arms disciplines. Pistol, Shotgun, Submachine Gun, Rifle and "Tactics"

As for being a participant in a real world situation involving a gun fight, the answer to your question is yes. It involved a hostage. The attacker was sent to Emergency & Intensive care and the hostage, while emotionally distraught , was physically unharmed.
My list of Accomplishments, Experiences, Certificates, & Research goes on and can & will be covered at another time and / or place.

I have trained numerous individuals from all walks of life. I do not discus individuals, operational status of individuals, or, any knowledge of operations
for the reasons as follows.
(1) Individuals may be involved in sensitive operations, i.e. "Classified"
(2) Training of some individuals and clients are requested to be kept
classified and / or confidential. (I can & will sign confidentiality agreements.)
(3) It is unprofessional to release information about any person without their
permission and / or consent.
If the afore mentioned is unsatisfactory, then I would highly suggest classes and training from either or both of these two sources.

(1) http://chucktayloramericansmallarmsacademy.com/
(2) http://www.suarezinternationalstore.com/

Both Gabe & Chuck are extraordinary individuals with overwhelming skills and track records.

If you are interested in any of my classes, or have any more questions,
please feel free to contact me.