
The Defense Training Institute was established in 1998 in Aurora, Illinois. After a few years, it was relocated to the city of Batavia, where it remained for seventeen years. In 2017, the institute returned to its original home in Aurora, where it continues to operate today.
Our facility is dedicated to the development of self-defense tactics, mindset, and training. We offer a comprehensive approach to personal protection, teaching a wide range of counter-reactive techniques, including joint locks, striking, grappling, and weapon-based skills.
Students are trained to respond effectively in real-world situations. If a confrontation moves to the ground, the focus shifts to gaining positional control and, if possible, returning to a standing position to allow for escape or re-engagement. Unrestricted by traditional styles or sport-based rules, our approach is rooted in practical combatives, real-world survivability, and self-defense.
Edgardo "Eddie" Perez
Professor/Coach
Professor Edgardo Pérez is a military veteran (USAF/Security Police), a retired police officer, and a dedicated family man with two children. With over 30 years of law enforcement experience, he has served in numerous specialized roles, including undercover narcotics officer with the FBI’s Organized Crime Drug Enforcement Task Force, Inspector with the Illinois State Police North Central Narcotics Task Force, and DEA undercover operative and consultant. He retired as a police Commander in 2016.
In 2019, Professor Pérez joined the Kane County Sheriff's Office as part of the Tactical Operations Division, where he currently serves as the Defensive Tactics Coordinator.
Professor Pérez began his formal martial arts training in 1979 in Aurora, Illinois. He later continued his studies in South Korea under Grandmaster Yu Chong Su, specializing in Hapkido. He holds an 8th-degree black belt in Hapkido and is the founder of both Junsakwon and Guazabara Esgrima. He is also a full instructor in Filipino Kali (Largo Mano style) and a dedicated student of Carlson Gracie Jiu-Jitsu.

U.S Hapkido Lineage
Kwang Seek Hyun (Hapkido-Chicago, Il.) >> Fowler Brothers (Hapkido-Aurora, Il.) >> Edgardo Perez
South Korea Hapkido Lineage
Takeda Sokaku (Aiki-Jūjutsu-Japan) >> Choi Yong Sool (Jūjutsu/Yu Sul-Korea) >>
Yu Chong Su (Hapkido & Kumdo - Korea) >> Edgardo Perez
Professor Pérez recently completed a book for martial artists of all styles, exploring The Way of the Warrior, the true value of martial arts, and the deeper meaning of walking the warrior’s path—a path that embraces both violence and peace.
More than just combat, martial arts serve as a powerful platform for personal growth, character development, and the pursuit of becoming a better human being.
"My hope is that Martial Thoughts will inspire the reader to discover the warrior that lies deep within us all."
— Eddie Pérez
An excerpt from Martial Thoughts
"On the day you depart from this world, will others say that it is a better place now than when you arrived? What do you think? I pose this question to my students and I ask you the same. Utilize the martial arts or any specialty that you're passionate about as a platform for doing good and helping others. Everyone is looking for a hero, this could be your opportunity.
I have spent my life training others to defend themselves, but life is more than just about fighting, we must also train to live the best lives that we can. I can train you to survive, but I would rather train you to win. To survive is not the same as winning and losing without learning is the only true loss. Life is the great challenge, compete and win as if you were in the dojo every day".

For your convenience, the book can be purchased by clicking the book retailers listed below.