Providing fair, objective and non-partisan evidence

Expert Witness

Since 2002 Chris  Butler has testified extensively across Canada in criminal trials, civil trials, coroner inquests, fatality inquiries and professional standards investigations.

Mr. Butler has been qualified as an expert witness in police use of force, use of force training, firearms, law enforcement risks assessments, excited delirium, neck restraints, subject control tactics, conducted energy weapons (Taser) and suicide by cop.

In relation to the Supreme Court of Canada ruling (White Burgess Langille Inman v. Abbott and Haliburton Co., 2015 SCC 23) which pertains to experts and their role in relation to the Court, Mr. Butler acknowledges and confirms that, as an expert, his highest duty is to lend assistance to the Court by way of evidence that is fair, objective and non-partisan.

Mr. Butler’s full CV and history of use of force reviews, consultations and expert witness testimony is available upon request.

For more information or to request an expert witness consultation, contact Chris Butler at


“I have had the pleasure of knowing Chris Butler for over 20 years. In that time I have seen him develop into one of North America’s top trainers in the areas of tactics, officer safety, use of force, incident command and crowd management. Chris’ commitment to excellence and passion for learning, growing and teaching drives him to be continually researching and implementing the most effective ways to teach and train physically and mentally.

Chris has also dedicated himself to researching and understanding the legal and human factors of law enforcement use of force. As a result Chris has developed a deep understanding of the science regarding human factors in tense, uncertain and rapidly evolving events. This deep understanding along with his integrity and high core values and his exceptional articulation skills, both verbally and in written form, have made Chris one of the leading use of force experts in North America.

Chris is a friend, a mentor and a resource I turn to on a regular basis for insight and guidance.”

Brian Willis
President of Winning Mind Training Inc.
Deputy Executive Director of the International Law Enforcement Educators and Trainers Association
“For nearly ten years, I have had the honor of working with Chris Butler. I have conducted numerous police training events with him and have watched him present to hundreds of police officers. His knowledge of human factor research and psychological information related to law enforcement is beyond compare, as is his ability to take this complicated science and put it into understandable and usable information. He is well received by law enforcement and civilians alike.

I too have learned a considerable amount in working with him and each time I watch him present a training, I obtain new and useful information. Chris has extensive police experience, but he is also a scholar. His thirst for knowledge drives him to constantly pursue the latest research and science that is applied to police matters. This also enables him to be well prepared and skilled in his ability to work with attorneys and courts in addressing use of force issues related to law enforcement.

I strongly recommend Chris to any agency who would like the most advanced and competent police training, as well as to attorneys who are looking for a use-of-force subject matter expert. He will not disappoint.”

John Azar-Dickens, Ph.D.
Licensed Clinical Psychologist
Georgia Mandated Police Officer

“Over the last several years, Chris has been an invaluable resource to our organization. Over that time, he has continually provided advice, training, and mentorship to our officers, instructors, and managers that deal with law enforcement. His training on use of force within law enforcement provided us with the background we needed to develop appropriate policies to keep our officers safe. Other training on general law enforcement tactics is very practical and easy for both officers / instructors to grasp. Chris is very knowledgeable, organized, and articulate. His presentations are excellent. I look forward to working with Chris and Raptor Protection in the future.”

Murray Ingstrup
Alberta Environment and Parks, Kananaskis Region