Bob Duggan

President- Founder

Bob Duggan founded Executive Security International in 1980 with an obsessive interest in human behavior, especially bad behavior. In 1973, Bob was a co-partner and founder of The Aspen Academy of Martial Arts where his interest in the precursors of attack sharpened.

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 […]

Abry Elmassian

Cadre- Executive Protection

Abry Elmassian has a multidisciplinary professional background that has spanned various industry intersections while having mental health as the informing foundation of her work.

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 […]

Barry Wilson

Senior Cadre- Executive Protection

Barry Wilson, President Anlance Protection Prior to forming Anlance Protection, Barry served in the US Army in the early 70s. He attended Colorado State University, managed several businesses, and later became involved in security consulting, specializing in Executive Protection, Uniformed Security, and Undercover Surveillance. After graduating from Executive Security International located in Aspen Colorado, Barry […]