DTI's  Chief Instructor,  Edgardo Perez,  has more than 28 years of training in Hapkido in both the United States and South Korea, a Full Instructor in Filipino Largo Mano Eskrima as well as being the founder and Chief Instructor of The World Guazábara Federation . Perez is a law enforcement veteran of more then twenty years who has also been teaching Police Defensive Tactics to local, state and military personal during that time. He is a member of  Illinois Tactical Officers Association and a  charter member of The International Law Enforcement Educators & Trainers Association (ILEETA). He remains on active duty as  Sergeant of Detective's .....more

Instructor Ronal Grist, Jr., CGI-3

3rd Dan Hapkido

Mr. Grist joined the DTI team with over 15 years of training in the martial arts. He currently holds Black Belt ranking in Hapkido, Tang Soo Do and the Okinawan Weapons system of Kobudo.  Mr. Grist was promoted to 3rd Dan on December 9, 2007.

Instructor Jim Gellner, CGI-3

2nd Dan Hapkido

Mr. Gellner has been a member of DTI for 5 years training in Jun Sa Hapkido with over 10 years of experience in the martial arts. He is currently holding the rank of Hapkido (Shodan), Apprentice in Guazabara, World Guazabara Federation Lifetime Council Member & Armas de Mano Instructor.  Mr. Gellner was promoted to 2nd Dan December 9, 2007.

Instructor Sal Videgaray,CGI-3

 1st Dan Hapkido

Mr. Videgaray is a medical student and a student of Chinese medicine with a background in the martial art of Lima Lama. He has been a member of DTI for eight years training in Warrior Hapkido (Shodan). He continues to train in MMA and Grappling. He is a Member of The World Guazabara Federation and  holds the rank of Apprentice-Level 3.

Instructor William Guralnick, CGI-3

1st Dan Hapkido

Mr.  Guralnick has been a member of  DTI for 9 years training in Warrior Hapkido, holding the rank of Shodan. He is a Lifetime Member of The World Guazábara Federation and  holds the rank of  Apprentice-Instructor.