Police Practices & Procedures Expert Witnesses: 25

Dr. Roy G. Taylor is a current Chief of Police with over 40 years of experience in a wide-range of federal, state, local, and private criminal justice positions. Dr. Taylor specializes as an expert witness in Police Practices and Procedures and Law Enforcement and Criminal Justice. Current Positions:

• Chief of Police Blue Ridge Public Safety (2014)
• President/CEO Signal 88 Security of Charlotte (2012)
• President/CEO Capitol Special Patrol (2012)
• Chief of Police Capitol Special Police (2002)
• Lt. Colonel – Provost Marshal, Army National Guard (2000)
• Antiterrorism / Emergency Management Branch Chief DoD (2007)
• Provost Marshal Joint Civil Support Task Force, Joint Chiefs of Staff (2014)

Litigation Support - Dr. Taylor is called upon to analyze cases from both defense and plaintiff perspectives. His services include case review, written reports, deposition, and trial testimony as needed. 

Areas of Expertise:

View Roy Taylor's Consulting Profile.

Aaron T. Olson, has decades of experience in the field of Police and Human Resources. His breadth of knowledge comes from many years in Law Enforcement, as an expert witness, consultant, and trainer.

Mr. Olson's company, A.T. Olson Consulting, LLC,  is certified by the U. S. Department of Veterans Affairs Center for Verification and Evaluation (CVE) as a Verified Service-Disabled Veteran Owned Small Business (SDVOSB); and the State of Oregon's Certification Office for Business Inclusion and Diversity (COBID) as a Service-Disabled Veteran Business Enterprise (SDVBE) and Emerging Small Business (ESB).

Background Experience: Mr. Olson has over 26 years of police experience managing assignments in communications, recruitment, and patrol. He supervised and evaluated both police and non-police employees. He was a member of the OSP Procedures and Rules Advisory Committee and worked with Oregon's Department of Justice in rewriting and validating OSP's trooper and cadet applicant hiring process. Mr. Olson had the honor of being a member of the first Oregon State Police Affirmative Action Recruiting Team. 

 As a patrol supervisor, Mr. Olson directed major crime scenes and traffic crash investigations. He reviewed and approved administrative, police, and use of force reports. He also investigated allegations of police officer misconduct, conducted background checks, and participated in specialized tasks in community policing, dignitary protection with the U.S. Secret Service and other law enforcement agencies. In his law enforcement, career he had experience in the use of physical and deadly force. In reaching out to new immigrants and refugees, Mr. Olson initiated the "Police and Emergency Services" workshops at the Immigrant Refugee Community Organization (IRCO) in Portland, Oregon. 

Mr. Olson is regular adjunct professor at Portland Community College (PCC), Portland, Oregon, and Eastern Oregon University (EOU), La Grande, Oregon. At PCC, Mr. Olson currently teaches cultural diversity online and campus criminal justice classes. He also teaches an online class on civil liability in criminal justice. At PCC, he has lectured on police use of force and facilitated the Police Use of Force Accountability Panel. At EOU, he teaches an online multiculturalism in emergency services course. He established history by designing the first cultural diversity courses and curricula for PCC's criminal justice program in 2001, fire protection program in 2009, and EOU's fire service administration program in 2011.

Mr. Olson is a published co-writer of Multicultural Law Enforcement: Strategies for Peacekeeping in a Diverse Society, 7th ed. Pearson Prentice Hall, and Multicultural and Diversity Strategies for the Fire Service, Pearson Prentice Hall.

Litigation Support: Mr. Olson meets the criteria of an expert witness as outlined in the Federal Rules of Evidence. He also meets the criteria of an expert witness as outlined in the Oregon Revised Statutes. He has been deposed as an expert witness several times. Mr. Olson's services are available to attorneys representing plaintiff and defendant and include diagnostics, thorough reporting, depositions, arbitration hearings, and trial testimony as needed.

Areas of Expertise:

View Aaron T. Olson's Consulting Profile.

Beth A. Mohr, CFE, CAMS, CCCI, MPA, PI, is a Law Enforcement / Police Misconduct expert with over 30 years of sworn and non-sworn investigative experience. Ms. Mohr is credentialed as a National Certified Instructor by the International Association of Directors of Law Enforcement Standards and Training, and is one of fewer than 150 individuals who have been nationally certified as an expert law enforcement instructor.  She is a Certified Fraud Examiner, Certified Anti-Money Laundering Specialist (CAMS), Certified Financial Crimes Specialist (CFCS) and a Certified Cyber Crimes Investigator (CCCI). She is also a Private Investigator licensed in New Mexico, Arizona, and California.

During her career with the San Diego Police Department, Ms. Mohr she was awarded three Commanding Officer’s Citations, which are the highest awards offered by the San Diego Police Department.  After retiring from the San Diego Police Department, she conducted death penalty mitigation investigations, and other complex felony investigations, including homicide and white-collar cases, for the Whatcom County, Washington, Public Defender’s Office.   This includes conducting investigations of allegations of police misconduct for the City of Albuquerque Independent Review Office.  Ms. Mohr recently chaired the City of Albuquerque’s Police Oversight Board, a civilian board which was created as part of the US Department of Justice’s Consent Decree with the City of Albuquerque and the Albuquerque Police Department. 

Ms. Mohr has taught courses on law enforcement topics including interviewing techniques, investigative ethics, evidence collection, financial and fraud investigations, and many other topics.  Her ethics courses, investigative courses, and fraud courses are certified for law enforcment credit.  Ms Mohr is a POST Certified law enforcement instructor in California, and a Nationally Certified Law Enforcement Instructor.  

Litigation Support - Beth A. Mohr is available as a consulting or testifying expert anywhere in North America.  She is neutral, fair, and her opinions are rooted in provable facts.  She strives to balance her cases between defense and plaintiff-sided cases, and also provides habeas consulting services.  Ms. Mohr has testified as an expert in New Mexico, Arizona, California, and Washington state, in federal and state courts, on a variety of subjects, including police procedures, police misconduct, white collar crime and fraud examinations. 

Areas of Expertise:

Dr. Ron Martinelli, PhD, CMI-V, is a nationally renowned Forensic Criminologist and a federal/state courts qualified law enforcement and premises liability expert who is also a Certified Medical Investigator (physician's level). He is also a Certified Suicide Investigator. 

Dr. Martinelli directs the nation's only Forensic Death Investigations & Independent Review Team of 26 law enforcement, forensic and medical experts and specializes in officer-involved death cases, civilian self-defense shooting cases and premises liability/security cases. He is a forensic/law enforcement expert to the U.S. Department of Justice, several State Attorney Generals' Offices, numerous major municipalities and nationally prominent private law firms specializing in wrongful death, civil rights and premises liability. 

Dr. Martinelli is the prevailing expert in over 90% of his retained cases. He has saved defendants over $300M and earned plaintiffs over $160 million in jury verdicts and settlements since 2004. He is the media's go-to forensic expert for FOX News, One America News Network, CNN, HLN, Sky News, BBC, NPR, and the History & Discovery Channels. Dr. Martinelli is skilled in crime scene reconstruction, forensics, applied sciences, human factors, psycho-medical emergencies and premises liability and security cases. His unique and extensive field experience, combined his academic and scientific credentials, excellent written reports and persuasive testimony, make him a very appealing expert to attorneys and juries alike.

Areas of Expertise:

• Arrests
• Search & Seizure
• Use of Force / Excessive Force - All Levels and Weaponry
• Officer Involved Shootings(OIS)
• In-Custody Deaths
• Criminal Investigations
• Law Enforcement & Corrections Practices, Training & Supervision
• Adult & Juvenile Corrections
• Law Enforcement Negligence
• Civilian Self-Defense, Premises Liability, Security, Foreseeable Harm
• Insurance Cases
• COVID Detentions & Arrests

Chief Chet Epperson (Ret.), MBA, has over 40 years of experience as a Law Enforcement / Police Professional for the Rockford Police Department in Rockford, Illinois. Chief Epperson spent 33 years as an active law enforcement officer and 10 of those years as Chief of Police. 

Chief Epperson maintains practical experience as a municipal police chief, implementing several police reforms in his police agency along with accountability processes. He was instrumental in reforming the Rockford Police Department by enhancing its relationship with the community and providing internal and external transparency. Chief Epperson assisted in the formulation of a multi-jurisdictional task force to investigate officer-involved police shootings, in-custody police deaths, and serious uses of force.

Litigation Support - Since 2016, Chief Epperson has been serving as a Police Practices consultant, providing court-appointed expertise in police agency Federal District Court Consent Decrees. He is an expert in applying Constitutional Standards, State Law, policy, and practice to police incidents. Having Instructed courses on police use of force, internal affairs, and discipline, Chief Epperson is qualified to opine on cases of this nature for both plaintiffs and defendants. His police and jail litigation services include thorough reporting, deposition, and trial testimony as needed.

Areas of Expertise:

View AGR Police Practice Group's Consulting Profile.

Richard D. Morman, CPP, CSSP, PPS, CSC, is a career Public Safety veteran. He served with The Ohio State University Police Division for over 29 years, retiring as the Deputy Chief of Police, a position he held for 10 years. Mr. Morman has been involved in all facets of Law Enforcement, including management and supervision, having a total of twenty two years in supervision and management. In 2010, he was selected as The Ohio State University Department of Public Safety Employee of the Year. Mr. Morman holds four professional certifications, Certified Protection Professional (CPP) designation from ASIS International, Certified Sports Security Professional (CSSP) as designated by the National Center for Spectator Sports Safety and Security (NCS4), Certified Personal Protection Specialist (PPS) as designated by the Executive Protection Institute, and Certified Security Consultant (CSC) as designated by the International Association of Professional Security Consultants.

Mr. Morman has vast Sports and Special Event Security planning and management experience, he is considered a subject matter expert in celebratory rioting, crowd management, sports and special event security planning and management, venue security planning and management and executive protection. In December 2011, he was invited by the US Department of Criminal Justice to present to a group of his peers in Best Practices for Large Venue Security. Mr. Morman has contributed to the Bureau of Justice Assistance publication: Practitioners’ Thoughts on Promising Practices for Securing College and University Spectator Events From Criminal Extremist Attacks and participated in developing the NCS4 Intercollegiate Athletics Safety and Security Best Practices Guide. 

Litigation Support - Mr. Morman provides expert witness services to attorneys for plaintiff and defendant which include written reports, depositions, and trial testimony as needed. 

Security and Police Practices & Procedures Specialty Focus:

View Richard D. Morman's Consulting Profile.

Michael Corbett, CFE, CEDS, CAMS, PI, is an Investigations and Compliance Professional with 35 years of leadership in the conduct, management, and oversight of complex investigations. After more than thirty years with the U.S. Drug Enforcement Administration (DEA) Mr. Corbett offers extensive experience in all phases of investigations to include development of investigative leads; witness identification and interviews; development and management of informants; evidence collection and analysis; operational planning, trial preparation and testimony. He has extensive experience in leading multi-agency, multi-jurisdictional investigations as well as policies, procedures and programs impacting operations.

Mr. Corbett has proven expertise in sensitive international operations requiring close coordination with foreign government officials and agencies and is experienced in working within the diplomatic and consular communities as well as with private sector interests abroad. Experienced in the detection, investigation and mitigation of official corruption.

Areas of Expertise:

Education, Certifications, and Licenses:
Bachelor of Science, Criminal Justice Administration, University of Central Missouri
Certified Fraud Examiner (CFE)
Certified E-Discovery Specialist (CEDS)
Certified Anti-Money Laundering Specialist (CAMS)
Licensed Private Investigator, Owner/Manager of a licensed Texas Investigations Company (State License A04186901)

Donald L. Leach, II, is a Jail / Corrections Management expert with over 30 years of experience. He has 20 years of consulting experience on jail management issues nationally, focusing on Risk Management for Jails and Jail Operational Methodology. 

Mr. Leach has extensive supervisory experience, having overseen up to 402 employees (indirectly). He also supervised internal affairs investigations, experienced in interviewing, hiring, training, scheduling, motivating, evaluating, and dismissing personnel. He is experienced in administering and managing a large detention facility, developing and administering programs, budgeting, contract development and monitoring, conducting research, monitoring compliance with policies and procedures, community relations, public speaking, controlling costs, problem-solving, and preparing reports.

Litigation Support - Mr. Leach has served as an expert witness for 5 years, in both State and Federal court. His services are available to counsel for both Plaintiff and Defense and include case review, testimony, and consultation for jail and prison issues.

Areas of Expertise:

View Donald Leach's Consulting Profile.

David T. Sweeney is a Police Policy and Procedure expert and a 34-year veteran police leader with Oregon State University PD and Seattle PD.  He has decades of experience supervising a large number of sergeants and officers. assisting with expert reviews of policing best practices for pursuits, use of force, security, and a variety of legal standards for police.

Litigation Support - Mr. Sweeney's goal is to improve best practices in policing by offering expert witness and police consultation services. A trained mediator specializing in workplace conflicts, he provides honest, unbiased opinions. Mr. Sweeney has spent 20 years as a sergeant and lieutenant, responsible for training and reviewing topics such as police pursuits, use of force, de-escalation, police supervision, less lethal weapons, active shooter, SWAT, crowd control, legal standards and more.

 Areas of Expertise:

View David T. Sweeney's Consulting Profile.

Daniel B. Kennedy, Ph.D., is FCA’s principal consultant and is Board Certified in Security Management. Dr. Kennedy has had extensive specialized training in various aspects of Criminal Behavior, Policing Operations, Corrections Operations, and Private Sector Security Management. He specializes in crime foreseeability issues, appropriate standards of care in the security industry, and analyses of the behavioral aspects of proximate causation.

Dr. Kennedy has testified in cases involving the appropriate standards of care for the use of deadly force, vehicle pursuits, emergency psychiatric evaluations, prisoner health care, prevention of prisoner suicide, positional asphyxia/excited delirium, and “suicide by cop.” He also evaluates numerous lawsuits concerning premises liability for negligent security in the private sector involving properties both in the U.S. and overseas.

Rachael Frost, Master Inv. (ret.) is a VIOLENCE RECOGNITION & RESPONSE SPECIALIST with over 20 years of experience in law enforcement practices and procedures investigation, domestic violence-related persons' investigation and policies, grants, and program development. She was the Riverside Sheriff’s Department’s first expert witness in domestic violence and developed a self-sustaining program in the Department to encourage future witnesses and abuse specialists.

Ms. Frost is currently a Sexual Assault Expert Cadre of Experts for End Violence Against Women International and a grant writer for more than $4 million in grant monies and programs to develop these areas of recognition, investigation, and response. She is also a Masters staff member for the Training Institute of Strangulation Prevention, works with the Communications Committee for the Association of Threat Assessment Professionals, and is Chief Financial Officer for the non-profit Kids Court, which addresses trauma concerns of children who are involved in the court system.

Ms. Frost evaluates and reviews policies and procedures related to Law Enforcement Response to Abuse Cases. She specializes in case preparation for Intimate Partner Violence Issues in Family, Civil, and Criminal court, including how domestic violence may affect children and law enforcement responses and investigation practices into abuse and threat cases. She is the Abuse and Law Enforcement Investigations Specialist hired by attorneys across the nation.

Ms. Frost has the direct experience needed in court; working in the field with victims of abuse and in Internal Affairs thoroughly investigating policy violations. Comfortable on the witness stand, she has testified numerous times as an expert witness for prosecution and defense, respondent and plaintiff in Family, Criminal, and Civil cases, because true testimony does not change dependent on your client. She has conducted hundreds of investigations into abuse and law enforcement related cases.Rachael Frost - Expert Witness Website.

Expert witness services in the areas of law enforcement response to:

View FROST ICED'S Business Consulting Profile.

Global Forensic Services, LLC (GFS) is a Forensic Consulting, Laboratory and Investigative Firm offering over 37 years of experience and training in a wide range of forensic science and private investigation disciplines.

Larry Stewart has personally examined tens of thousands of individual items of evidence from sources such as state, local, and federal agencies (e.g. Federal Bureau of Investigation, Secret Service, Bureau of Alcohol, Tobacco and Firearms, Central Intelligence Agency, and others), and foreign governments. On several occasions he has examined cases involving international disputes between governments. 

Mr. Stewart has testified as an Expert Witness in state, federal and military courts of law, as well as in foreign court systems to include; Austria, Australia, Canada, Germany, Sri Lanka and Thailand. He has also testified at The Hague in the Netherlands and three times as an expert before the U.S. Congress. 

Areas of Expertise Include:

James (Jim) K. Ellis is a retired FBI Agent with more than 33 years of complex investigation experience.  He is a Certified Fraud Examiner (CFE), a Private Investigator, and FINRA Arbitrator. 

During his 29-year career as an FBI Agent stationed in Dallas, Texas, Mr. Ellis earned over 20 awards and commendations. He led investigations on hundreds of complex criminal violations including fraud, money laundering, violent crime, homicide and narcotics trafficking.  He served for ten years on the FBI’s highly acclaimed Evidence Response Team before retiring from the FBI on December 31, 2015.

Litigation Support - After retirement, Mr. Ellis became a Private Investigator specializing in complex fraud investigations and expert witness support for attorneys. He has participated as the lead investigator in dozens of trials at both the federal and local levels. He has years of experience actively working all stages of the litigation process. From running investigations, to the filing of a legal action, to the presentation of the matter in a trial before a jury, Mr. Ellis is exceptionally qualified to help attorneys for both plaintiff and defendant deal with the arduous tasks of preparing for litigation. He is located in Texas but is available nationwide.  

Services Include:

Areas of Expertise:

View JKE Texas Private Investigations' Consulting Profile.

Robert T. Johnson is a Law Enforcement Veteran with 32 years of active service. As a retired Lieutenant Colonel from the Illinois State Police, Mr. Johnson continues to serve as a private consultant and expert witness regarding Law Enforcement Policies and Practices most frequently for Use of Force and Police Pursuits but has also testified regarding other police policy & practices issues. He also conducts Sensitive Internal Investigations as an independent investigator for municipalities regarding allegations of Police Misconduct.

Mr. Johnson has extensive experience in Police Administration, Management and Supervision, Criminal Investigations, Use of Force and Officer Invoved Shooting Investigations,Patrol Procedures, Complaint/Internal Investigations and Task Force Operations. Robert Johnson has been qualified as an expert witness in state and federal court. He has consulted and testified for numerous police agencies as well as plaintiffs in litigation regarding the use of force/deadly force, pursuits, emergency vehicle response, and other policy issues. Mr. Johnson has been retained as an expert in well over 150 cases and has testified at several civil trials, State & Federal.

Areas of Expertise:

• Agency Policies, Practices and Customs
• Batons, Flashlights and other Impact Weapons
• Chemical Irritants & Electrical Weapons
• Deadly Force; Shooting Avoidance and Alternatives
• Employee Dishonesty Investigations
• Neck Restraints and Similar Defensive Tactics
• Positional Restraint Asphyxia
• Prisoner Transport, Restraints, Handcuffing and Hog-tying
• Retention of a Known Unfit Employee or Negligent Entrustment of a Weapon
• Search and Seizure
• Standards for Discipline, Internal Affairs Procedures, (In)Adequate Punishment
• Use/Protection of Confidential Informants
• Vehicle Pursuit & Emergency Response Policies & Techniques

View Consulting Profile.

Victor Lofgreen, PhD has over 30 years of experience and education in the fields of Corrections and Community Development. He is a prison and jail consultant who conducts cases analysis and develops reports to support litigation on prison and jail issues. Experience - Dr. Lofgreen has served as the CEO of a State Adult Correctional Institution and the Division Chief of a State Planning Agency for Corrections. He has authored numerous professional papers and articles on topics within his area of expertise as well as Agency Policy and Procedure Manuals and training materials. Litigation Support - Dr. Lofgreen's expertise is in Jail and Prison Policy and Procedures related to the standard of care for inmates by local, State, and Federal correctional agencies. His services are available to counsel representing plaintiff and defendant and include case review, case study and data analysis, report of Expert Opinion based on the evidence included in the case study, deposition, and trial testimony as needed. Areas of Expertise: