Todd Haller

Senior Cadre- Shooting Instructor

Todd Haller Senior Shooting Instructor Todd Haller began teaching for ESI as a Senior Shooting Instructor in 2004. He is a Patrol/Training Sergeant with the Snowmass Village Police Department and has been in law enforcement since 1995. Todd is the Training Director for the Roaring Fork Regional multi-agency firearms, arrest control, use of force, and […]

Tony Pagni

Cadre- Shooting Instructor

Tony Pagni Officer Pagni began his affiliation with ESI in 1982 as a student of Hwa Rang Do under Bob Duggan’s instruction. During the same period, Tony began his training in ESI’s firearms program as a range hand and assistant shooting instructor. In 1985, Tony graduated from ESI’s Executive Protection Program and continued on to […]

Keith Buckner

Range Master- Senior Firearms Instructor

Keith Buckner, Army Sergeant Major, (Ret.) SGM Keith Buckner brings a wealth of knowledge and experience to his role as Range Master for the ESI shooting programs. He served our country for over 31 years and retired as an Army Sergeant Major, the highest enlisted rank, just above First Sergeant and Master Sergeant. He was […]

Patrick Devine

Cadre- Tactical Medicine

Patrick Devine Patrick Devine has spent his life in service to others and has spent the last 20 years in the security industry. An ESI alumnus who has been primarily involved in the Executive Protection world, he also has experience working High-Risk/PSD details and many other facets of the protection world. A leader in the […]

Mark Robbins

Senior Cadre- Tactical Medicine


Abry Elmassian

Cadre- Executive Protection

Abry Elmassian Abry Elmassian has a multidisciplinary professional background that has spanned various industry intersections while having mental health as the informing foundation of her work. She has worked in legislative policy reform for previously incarcerated individuals, and family reunification support services for folks who have been affected by incarceration, abuse, homelessness, and other manifestations […]

Chuck Mauldin

Cadre- Corporate Security Management

Chuck Mauldin Mr. Mauldin has been a highly experienced, affable, and well-trained leader in the protective services (EP) industry for 30+ years. A graduate of ESI’s Executive Protection Program circa 1989, Chuck also specializes as a protective intelligence, risk mitigation threat analysis, and residential security assessment specialist. Chuck has successfully managed numerous local, national, and […]

Greg Nelson

Cadre- Corporate Security Management

Greg Nelson Mr. Nelson is a privacy, protection, and preparedness advocate, with over twenty-five years of security industry experience building value-added security strategies for businesses, organizations, communities, and individuals. His expertise draws on a deep and diverse background which includes professional and volunteer experiences in the public and private safety sectors, as well as years […]

Certified Protection Specialist™

The Executive Protection Training Program consists of essential courses for both beginners and Security Professionals

Alumni Association

When you graduate from ESI, you won’t be cast to the wind with a hearty handshake and a ‘good luck.’ You’ll have an experienced industry resource that you may utilize throughout your training and all during your career.

Post 9-11 GI Bill

ESI is approved by the Colorado Office of Veterans Education and Training
(COVET) for Veterans Education and Training Benefits.

Training to a Standard

ESI TRAINS TO A STANDARD! Whether its corporate America, dignitary protection, the celebrity industry, threat assessment, or security.

Executive Security International

At ESI, our mission is to empower protectors to serve better. We are dedicated to providing comprehensive and elite training programs that equip individuals with the knowledge, skills, and mindset required to excel in the field of close protection.


Telephone: 970-242-9004
Address: 743 Horizon Court Suite 200A, Grand Junction, CO, 81506 USA