Jeff Duncan, Shidoshi, has over 45 years of martial arts experience. He holds rank in Judo, Black Sashes in two styles of Kung Fu, and Black Belts in Shaolin Karate Do. Currently he is a licensed Shidoshi (Teacher of the Enlightened Ways) and holds the rank of Judan in the Bujinkan System.

Jeff Duncan is trained in executive protection and skilled in personal protection and firearms tactics. He is the President of Foresight Personal Protection Systems, and teaches classes and seminars throughout the United States in personal protection, martial arts, and firearms tactics.