The Strategos Team

Strategos International is led by veterans of law enforcement, the U.S. military, private security and education. We have diverse experience serving businesses, schools, churches and law enforcement. Strategos staff speak and train worldwide and are frequently sought out by regional and national media for expert commentary on active shooters, terrorism and crisis response.

Vaughn Baker

Co-Founder / President


Vaughn Baker is president of Strategos International, a Kansas City, Mo.,-based firm that provides security training, consulting and executive protection services.

Baker has 20 years of experience in law enforcement including patrol, investigation, SWAT and special operations. He has trained thousands of school, health care, government, law enforcement and military personnel in security practices. Baker has also developed specialized intruder response curriculum for schools and churches, including some of the nation’s leading training on behavior pattern recognition. He is the author of The Church Security Handbook and, with Mark Warren, Active Threat.

In addition, he served as deputy director of training and as an instructor for the Surefire Institute, a California-based tactical lighting manufacturer and tactical training company.

He is also the director of security for a church of more than 7,500 in the Kansas City area, a position he has held for more than a decade.

Mark Warren

Co-Founder / Executive Vice President


Mark Warren is a former law enforcement officer in multiple jurisdictions including the Blue Springs, Mo., Police Department, where he finished his career with the rank of sergeant. He also served as an undercover officer for the Jackson County Drug Task Force. Before joining civilian law enforcement, he served in the  U.S. Army as a military police officer. He has trained thousands of students through Strategos, the Surefire Institute and the Western Missouri Public Safety Institute.

Geoff Arbuckle

Chief Operations Officer

Bringing with him more than 20 years of senior/executive level success, Geoffrey Arbuckle joins the Strategos International team as Chief Operating Officer. Having previously served as President of  a non-profit organization fighting human trafficking, Arbuckle has also enjoyed great success as a serial entrepreneur, as a global sales and marketing consultant to Fortune 500 companies, and as the head of marketing within the pharmaceutical business unit of a multi-billion dollar healthcare conglomerate.  Arbuckle has a proven leadership expertise in managing all aspects of an organization, from operations, sales, marketing and business development. He is also a polished public speaker in and out of the business world, having lectured on a wide-range of topics and as a motivational speaker. Arbuckle resides in Lee’s Summit, MO with his wife China and Cavalier King Charles named Winston Churchill. Together, Geoffrey and China have 4 adult children (3 sons and 1 daughter). Geoffrey and China attend Fellowship Church in Greenwood, MO and are active throughout their community. 

Nick Spencer

Vice President Of Operations

Nick Spencer is a lead instructor and Vice President of Operations for Strategos International. Nick began his career with the U.S. Army, where he served as a team leader for a tactical PSYOP team. During his 8-year enlistment, Nick obtained the rank of E6, Staff Sargent. He served in peacekeeping operations in Bosnia and spent 14 months in Iraq during Operation Iraqi Freedom.

After his enlistment, Nick served the Blue Springs (Mo.) Police Department, where he spent seven years in patrol.  Nick was also a member of the department’s tactical team and was the training coordinator and a lead instructor.

Todd Burke

Manager – Firearms Training Division


Todd Burke has served for 35-years as a police officer, firefighter, and paramedic in both career and volunteer capacities as a line officer, supervisor, and chief officer.  He holds a wide variety of certifications and instructor’s credentials, he is a Certified Police Specialist and Generalist Instructor with the Missouri Department of Public Safety, he has had numerous articles published in professional journals, and he has offered expert witness testimony in high-profile felony and capital crime prosecutions.  Todd helps organizations and individuals realize their training needs and objectives and then exceed those requirements with a cadre of talented and experienced staff.

Steve Anderson

Director Of School Safety And Security Solutions

Prior to joining Strategos, Steve served 38 years as a teacher, coach and administrator in Arkansas public schools.  The last 13 years he served as superintendent of the state’s 20th largest district.  Throughout his administrative career, he made school safety and security his number one priority and has made many presentations on school security.  His school district was visited by the President’s Commission on School Safety due to it’s unique approach to school safety & security.  In addition to other school leadership responsibilities, Steve served as a Commissioned School Security Officer in the district for 17 years.

 His positive experience as a satisfied repeat Strategos Client led him to join the Strategos Team after his retirement in 2019. His role is to help schools identify ways to improve safety & security through staff training and assessing campus security.

Mark Rivera

Asst. Director of Chaplaincy & Spanish Church Security Programs

Pastor Mark is the Lead Pastor at Riverside Church located in Haverhill, MA and Asst. Director of Chaplaincy & Spanish Church Security Programs for Strategos International.

He formally served as Deputy Director of Youth Services in Massachusetts overseeing 6 juvenile prisons. In addition to his time with DYS he also enjoyed a 7 year career in various law enforcement roles throughout Essex County and Massachusetts.

Mark has been serving as a First Responder Chaplain for the past 5 years. He holds certifications in Advanced Critical Incident and Stress Management, and Advanced Crisis Negotiations. He is a member of the state-wide Peer to Peer Support Unit who offer services to area Police Departments.

Born in Puerto Rico, he has the added benefit of being fluent in both English and Spanish. During his free time he enjoys reading, writing, deep sea fishing, and spending time with his family.

He is a gifted conference speaker and trainer. Topics include: church safety, executive protection, leadership development, organizational management, capital campaigns and church planting. Mark is a graduate of the Massachusetts Criminal Justice Training Council, the Waltham Police Academy and is presently enrolled in a Masters degree program at Gordon Conwell Theological Seminary.

Leanda Warren
Office Manager
816.795.3768 x101

Kirstie Gleason
Assistant To The Office Manager
816.795.3768 x110

Amanda Penwell
Program Support Specialist

Cody Ashley
Marketing & Brand Manager
816.795.3768 x108

Not Sure Who To Contact?

Call us at 816.795.3768 or go here to send us a message.  We’ll be glad to get you to the right person.