Undersheriffs/Chiefs

Mark S. Spitzer was appointed as Undersheriff for the Bureau of Law Enforcement on February 8, 2017, and was sworn in by Superior Court Judge Thomas Critchley. Undersheriff Spitzer is responsible for all operations within the Bureau of Law Enforcement. Undersheriff Spitzer has thirty-four (34) years of law enforcement experience. He previously served on the Mount Olive Township Police Department (a nationally recognized and Accredited Agency); specifically as the Chief of Police for the past nine (9) years. During his tenure at the Mount Olive Township Police Department, Undersheriff Spitzer held many assignments including; Operations Division Commander, Investigations Division Commander, Patrol Division, Task Force Unit, the Special Operations Unit, Internal Affairs, and the Field Training Unit.

Undersheriff Spitzer received an Associate of Science Degree, in Criminology, from the County College of Morris. He went on to earn a Bachelor of Science Degree in Sociology and Criminal Justice (Summa Cum Laude) as well as a Master of Arts Degree in Leadership and Public Administration from Centenary University in Hackettstown, NJ. Undersheriff Spitzer is also a graduate from several Police Management and Leadership courses including; Northwestern University’s School of Police Staff and Command, the West Point Command and Leadership Program, Northwestern University Center for Public Safety’s Executive Management Program and the F.B.I.’s Law Enforcement Executive Leadership Program. Undersheriff Spitzer is an Advanced Accredited Chief Executive (ACE) through the New Jersey State Association of Chiefs of Police (NJSACOP).

Undersheriff Spitzer is a member of the International Association of Chiefs of Police (IACP) where he currently serves as New Jersey’s State Representative to the State Associations of Chiefs of Police (SACOP), the New Jersey State Association of Chiefs of Police (NJSACOP) where he currently serves as the State Parliamentarian, and the Morris County Police Chiefs Association (as its President in 2012). He is the founder and past president of the Morris County Superior Officers Association and a former Team Leader for the Morris County Critical Incident Stress Debriefing Team. Undersheriff Spitzer serves on the National Board of Directors of Law Enforcement Against Drugs (LEAD) Program and has also served as an Advisory Board Member of the Institute of Law Enforcement and Emergency Services Education (ILEESE) at Centenary University, as an Advisory Board Member of the Mount Olive Child Care and Learning Center, and as the President of the Board of Directors of the Center for Evaluation and Counseling (CEC).

The Undersheriff has received numerous departmental awards including an Exceptional Duty Award, two (2) Meritorious Service Awards, a Life Saving Award, four (4) Grand Cordons, two (2) Honorable Service Awards, a Program Development Award and two (2) Educational Achievement Awards. In 1989, Undersheriff Spitzer received the Knights of Columbus Shield Award for the investigations of several bank robberies and a homicide. In 2002, he was awarded the Executive Leadership Award by Northwestern University, in 2012, he was awarded the Morris County Police Chief’s Association Distinguished Service Award, in 2014, he received the NJSACOP President’s Award, and in 2016, the Chief Sandy Danco Service Award from the NJSACOP.

Richard A. Rose was promoted on September 1, 2020 to a position as one of two Undersheriffs in the Morris County Sheriff’s Office Bureau of Law Enforcement.

Undersheriff Rose previously served since January of 2017 as Chief Warrant Officer for the Bureau of Law Enforcement, and was responsible for the Bureau’s Administrative Division as well as audits, budgeting, reviews and operational services.

As an Undersheriff, he maintains management of those duties as well as oversees all Morris County Court Services, including Protective Services, Legal Services, the Warrants Section and Professional Standards.

Undersheriff Rose has more than 30 years of law enforcement experience, previously serving until June of 2016 as the Executive Captain for the Morris County Prosecutor’s Office. He is considered one of the longest-serving sworn members of the Prosecutor’s Office Investigative Staff.

Undersheriff Rose had previously been assigned to the Grand Jury Unit, Trial Unit, White Collar Crime Squad/Fraud Unit and the Special Investigations Unit. As a Superior Officer, he had also commanded the Special Services Section, Trial Division, Tactical Division, Family Division, Special Enforcement Division, Administration Division and the Specialized Crimes Squad during his tenure with the Office. Undersheriff Rose also served as the Office’s Public Information Officer.

Undersheriff Rose has a vast amount of experience in conducting internal affairs investigations and served as the Office’s Internal Affairs Officer for several years. He also served as the Office’s Administrative and Executive Captain for the past three (3) County Prosecutors based on his law enforcement organizational and administrative skills. Undersheriff Rose served as the NJSACOP Accreditation Manager and Assistant Accreditation Manager and was instrumental in the Morris County Prosecutor’s Office being accredited by the New Jersey State Association of Chiefs of Police in May of 2012 and then re-accredited in June of 2016.

In 2003, Undersheriff Rose was recognized for his participation in the Executive Protection and Security Detail within Morris County of then President George W. Bush. In 2006, he received the ASIS International Leadership Award in recognition of his outstanding leadership and commitment to the highest standards of the profession of law enforcement. In 2013, Undersheriff Rose received a Prosecutor’s Commendation for serving as the Primary Accreditation Manager and spearheading the effort that facilitated the Morris County Prosecutor’s Office initially being accredited by the Commission on Accreditation for Law Enforcement Agencies (CALEA) and the New Jersey State Association of Chiefs of Police (NJSACOP). Again in 2016, he received a Prosecutor’s Commendation for serving as the Primary Accreditation Manager during the NJSACOP Re-Accreditation Period which facilitated the Office being re-accredited by the New Jersey State Association of Chiefs of Police.

Undersheriff Rose holds a Bachelor of Arts Degree in Criminal Justice from LaSalle University in Philadelphia, PA as well as a Master of Arts Degree in Criminal Justice from John Jay College of Criminal Justice (C.U.N.Y.) located in New York City. Undersheriff Rose has completed course work and received certification in Supervisory Management from Rutgers University. He is also a graduate of the F.B.I.’s “Law Enforcement Executive Development Seminar” (L.E.E.D.S.) as well as the New Jersey State Association of Chiefs of Police’s “New Jersey Police Executive Institute Training Course”.

Undersheriff Rose also completed the U.S. Department of Justice – Drug Enforcement Administration’s Narcotics Commander Leadership Program in 2001. He is also a graduate of the NJ Statewide Narcotics Task Force “Top Gun” Course along with completing the National Incident Command System Training Courses. Undersheriff Rose has also attended numerous seminars and training courses on a variety of investigative and law enforcement topics throughout his thirty (30) years with the Morris County Prosecutor’s Office. He has received extensive training in the areas of Policy Development, Risk Management in Law Enforcement, Internal Affairs and the Law Enforcement Accreditation Process.

Chief Sheriff’s Officer Aaron D. Tomasini

Chief Aaron D. Tomasini began his career with the Morris County Sheriff’s Office in July of 2005. Chief Tomasini spent the majority of his tenure assigned to the Special Services Division, where he performed a variety of roles as a K-9 Handler, K-9 Trainer, Bomb Technician, and Tactical Operator with the Sheriff’s Emergency Response Team. Over the years, Chief Tomasini worked with many K-9 partners, but most significantly Jax, Hydro, Sig, Kiara, and Po. He has collaborated with multiple organizations and was a member of the New Jersey State Police Detect and Render Safe Task Force for both explosive detection and as a bomb technician. Throughout his career, Chief Tomasini has gained certifications in multiple disciplines that include K-9 Trainer through the Morris County Sheriff’s Office, New Jersey State Police, and United States Police Canine Association, Supervising K-9 Trainer, Firearms Instructor, Police Rifle Instructor, Basic Search and Rescue Instructor, Search and Rescue Coordinator, Project Lifesaver Trainer, Monadnock Expandable Baton Instructor, TASER Master Instructor, FBI-trained Basic Sniper, and FBI-certified Tactical Bomb Technician (TBT). Chief Tomasini has also had the privilege of supervising several additional critical units including Crime Scene Investigation, the newly formed Emergency Services Unit, Patrol, and the Marine Police.

Chief Tomasini is a veteran of Iraq and Afghanistan and is still currently serving as a commissioned officer in the New Jersey Army National Guard. His military education includes the Infantry Basic Officer Leader Course, Basic Airborne Course, Pathfinder Course, Ranger School, Air Assault Course, Basic Military Mountaineering Course, Maneuver Captains Career Course, Senior Service and Command and General Staff College-Intermediate Level Education, and the Senior Service and Command and General Staff College-Advanced Operations Course.

Academically, Chief Tomasini holds multiple degrees and certificates that include an Associate’s Degree in Criminal Justice from the County College of Morris, two Bachelor of Arts Degrees in Psychology and Sociology from Thomas Edison State University, a Master’s Degree in Management from Thomas Edison State University, a Master’s Degree in Business Administration with a focus in Human Resource Management from William Patterson University, and an Educational Doctorate in Organizational Leadership from Stockton University. Chief Tomasini is also a graduate from several Police Management and Leadership courses including; the New Jersey State Association of Chiefs of Police (NJSACOP) Command and Leadership Academy, Leadership in Middle Management, Police Executive Institute, Contemporary Issues in Police Administration, Foundations in Executive Leadership, and the Budgeting and Financial Administration course.

Chief Warrant Officer John A. Ambrose

Jack began his law enforcement career after attending County College of Morris from 1984 to 1986, where he studied Criminal Justice. In 1985, he was hired as a Police Dispatcher with the Chatham Borough Police Department. The following year, he completed the Morris County Police Academy's Class II Special Law Enforcement Officer program before being appointed as a Police Officer with the Township of East Hanover on July 28, 1986. He then attended the Morris County Police Academy's Basic Course for Police Officers, graduating with the prestigious Physical Training Award.

Over the course of an exceptional 33-year career with the East Hanover Police Department, Jack served in nearly every facet of law enforcement. He spent his first 12 years in Patrol, the next 12 years in the Detective Bureau, and concluded his career in administration. Rising steadily through the ranks, he was promoted to Captain and served as the department's second-in-command, frequently assuming the responsibilities of Acting Chief during the Chief's absence. Jack retired on November 27, 2019, after more than three decades of dedicated and distinguished service to the East Hanover community.

One of the defining achievements of Jack's career has been his longstanding role as Head Drill Instructor at the Morris County Police Academy. For more than 31 years, he has helped shape the character, discipline, and professionalism of thousands of police recruits entering the law enforcement profession. Even after his retirement from municipal policing, he has remained committed to mentoring and training the next generation of officers.

Recognizing his leadership, experience, and unwavering commitment to public service, Sheriff James Gannon selected Jack to serve as the Chief Warrant Officer of the newly established Morris County Sheriff's Patrol Division.

Prior to this appointment, Jack was personally selected by Sheriff Gannon to become the first full-time Morris County Sheriff's Special Law Enforcement Officer II assigned to the Protective Services Division. Throughout his career, Jack has earned a reputation for exceptional leadership, professionalism, and the ability to communicate effectively with people from all walks of life. He is widely respected throughout Morris County, having trained virtually every Morris County Sheriff's Officer during their time at the Police Academy.

Outside of his professional career, Jack has remained deeply committed to serving his community. He and his wife, Jodi, have proudly called East Hanover home for more than 35 years. They are the proud parents of their daughter, Melissa, a graduate of Montclair State University who has built a successful career in the fashion industry.

Jack continues his service to East Hanover as the Director of the East Hanover Community Emergency Response Team (CERT) under the Office of Emergency Management, where he remains dedicated to protecting and strengthening the community he has served throughout his career.

Alan J. Robinson has over 30 years experience in the field of corporate security management, investigations, intelligence and executive protection. For the past 28 years, he was the director of Protection and Security Services/Emergency Management for Atlantic Health System, responsible for the protection of 16,000 employees, 4,000 physicians at six (6) hospitals as well as 300+ satellite locations. In this capacity, his department was ranked 10th nationally, and 1st in New Jersey, for security programs that delivered outstanding business value. In 2006, he was nominated to be the first national Director of the Year by Campus Security Magazine for his security management and expertise.

In 2013, he was appointed to the State of New Jersey Domestic Security Preparedness Task Force, the State’s cabinet-level body responsible for setting homeland security and domestic preparedness policy, by Governor Chris Christie.

He is a national speaker and police academy instructor for the FBI, Morris County Prosecutor’s Office, U.S. Attorney’s Office and many state, county and municipal police departments in the area of protecting children from sexual predators. In this capacity, Robinson has received countless awards including: the 2008 FBI Director’s Award for Distinguished Community Service; the 2005 Executive Proclamation from Governor Codey for Community Service in Protecting Children from Sexual Predators; the 2011 Morris County Detective’s Association Special Recognition Award; the 2012 recipient of a Senate Resolution from Senator Joseph Kyrillos for his community service in protecting children and vulnerable populations; and awarded as 2015 Honorary Chief of Police by the Morris County Police Chiefs Association. He has also served as a police self-defense instructor for the United States Marshals Service and other state and local police departments.

Robinson received his undergraduate degree in Police Science from Thomas Edison State College. He is certified in Homeland Security (Level IV) in the fields of Incident Command and Terrorism by the American College of Forensic Examiner’s Institute and is a Certified National Threat Analyst by the American Board for Certification in Homeland Security.

Undersheriff Robinson lives in Brookside and is the father of two grown children. He oversees the Bureau of Corrections, conducts Risk Assessments and provides assistance at Community based Programs.

 Bio and additional information coming soon.