Conflict Defense was created by John Duza because business owners had a specific need for specialized training for their security staff when dealing with conflict scenarios.

These specialized hands on workshops were provided for the following businesses: Jameson's Pub, Cabo Cantina, PB Shore Club, Onyx, Thin, Sidebar, Typhoon Saloon, Bub's, Monty's, and Kelly's Pub.

John Duza has over 30 years of experience instructing the public and private sectors. He has conceived many advanced principles to yield better results in the training methods.

He has been featured on Planet X TV, KUSI News, KGTV 10, NBC7, and FOX 6 News. John was also an invited Instructor at the prestigious “GATHERING OF THE MASTERS” and “GATHERING OF THE EAGLES” Martial Arts Masters Expo. He also did motion capture with Sony PLAYSTATION for a martial arts video game.

John Duza also worked directly with the SAY San Diego Foundation for Kids, various centers for abused women facilities, after-school programs, Military personnel including Special Forces, Security companies, Bar industries and Corporate Wellness programs with SAIC.

He has also taught women's self-defense programs at San Diego State University as well. Most recently, he has partnered with the Guardian Angels San Diego chapter to provide training and real-world self-defense tactics to its members.