Professor Gary Dill has the rare honor of being one of the few original students who trained in one of Bruce Lee's three JKD schools while Bruce was still alive and heading up the JKD training program. Dill has been teaching Jeet Kune Do for almost 30 years, and is considered by many as one of the nationally known authorities in JKD today. He has written numerous articles concerning JKD for "Black Belt", "Inside Kung Fu" as well as other martial art magazines, has authored a JKD training manual, and produced a comprehensive collection of JKD home study videos.

Professor Dill trained at Bruce's Oakland JKD branch school under Sifu James Yimm (Jimmy) Lee, which was located in James' garage. In December 1972, just a few days before he died, James gave Dill a two year JKD training outline along with a dozen of the "JKD Student Handbook", so that Dill could pass on his knowledge of JKD to his friends and selected students. Professor Dill started teaching JKD in January 1973, and has trained thousands of students in JKD since that time.

In 1986, Dill was appointed to the Board of Directors of the former Jeet Kune Do society, and served on that board with several of the other original students (Inosanto, Wong, Jackson, Linda Lee, etc.). this was the forerunner of what is now the JFJKD Nucleus. In 1991, Professor Dill founded the Jeet Kune Do Association in order to preserve and promote the authentic JKD, and to provide training to those open-minded and sincere students who wish to learn the real JKD.

As well as being a world known authority on JKD, Professor Dill is also a fully certified grandmaster of Bushido Kempo, a pure combat system with techniques from Karate, Ju-Jitsu, Aiki-Jitsu, Gung Fu, and weaponry. He has been inducted into several martial art hall of fames, and is a member of three different grandmaster councils. He has also received official rank recognition from mainland China as an 8th Degree Black Sash in Chinese Wu Shu. The Professor has been active in the martial arts since 1963, and hold black belts in several different combat martial arts.

On a personal note, Professor Dill has spent many years in law enforcement, having served as a federal intelligence agent, state police criminal investigator, and as a chief of police. He was also a firearms instructor and a senior police defensive tactics instructor. He is a Vietnam veteran, and served in both the US Marine Corps and in the US Navy, and was a special agent with Naval Intelligence (NIS). Professor Dill now delegates all of his time to teaching the combat arts.