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Consultants and Forensic Experts


All Experts' CV Abstracts

Experts' CV Abstracts
by Specialty

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Our Police, Criminal and Security Group consists of experts with in-service experience involving police training; arrest, jail, and prison procedures; weapons and ballistics; assaults; DUI, including testing; drug interdiction; EMS procedures; surveillance; DNA and polygraph testing; security measures and techniques; crowd control; and private investigations (including undercover, photography, interviews, background checks, skip-trace, and serving legal documents).  These experts are supported, as needed, by our Fire and Explosion Investigators; Toxicologists; Psychologists; Psychiatrists; Private Investigators, and Human Factors experts.
Police, Criminal and Security Experts
CV Abstracts

Timothy A. Dimoff, CCP, LPI;
Security, Safety, and Police Expert
Mr. Dimoff has over 30 years experience involving security, safety and police procedures. His expertise includes security systems planning, management, and evaluation; crime foreseeability; standards of care; causation issues; use of force; police pursuits; jail incidents; weapons use; failure to protect; drug and alcohol policies and testing; dram shop liability; corporate internal investigations; labor disputes and strikes; management training and development; security assessment and vulnerability issues; pre-employment screening and background checks; sexual harassment; workplace violence; crises management; executive security; human resource issues; corporate security; management training/employee education; arrest procedures; use of force/self defense/escalation of force; vehicle pursuit procedures; narcotics investigations/enforcement; patrol procedures; traffic enforcement procedures; accident investigations; internal investigation procedures; alternative weapons use; defensive driving; electronic restraint devices; aerosol projectors; martial arts; K-9 handler and trainer; DOT training; crack houses; clandestine labs; search warrants; dock and warehouse theft; fraud investigations; and school violence and prevention.

Tim's Certifications include Certified Protection Professional (CPP);
Certified State of Ohio School Commander in Law Enforcement (12 Years); Certified State of Ohio School Commander in Corrections (8 Years); Certified State of Ohio School Commander in Jailer Programs (8 Years); Certified State of Ohio School Commander in Private Security (15 Years); Certified by the State of Ohio as an Instructor and Expert in the Field of Law Enforcement & Private; Security Training & Procedures. (15 Years); and Licensed Private Investigator (LPI), Ohio.

His past and present Professional Memberships include: The  American Society For Industrial Security (ASIS); The Infagard Association; The NOITR; The American Society of Law Enforcement Trainers (ASLET); The American Association of Correctional Training Personnel; The State of Ohio and International Narcotic Associations; The Alcohol and Drug Abuse Prevention Association of Ohio; The National Association of Prevention Professionals and Advocates, Inc.; The Ohio Association of Security and Investigation Services (OASIS); The Ohio Association of Chiefs of Police, Inc.; and The National Advisory Board for Witness Justice (Victims of Crime).
Harvey W. Halbertstadt, MD
Forensic Psychiatrist/Psychologist
Dr. Halbertstadt's experience includes child, adolescent, and adult psychiatry; competency determinations; marriage and family counseling; sexual exhibition, rape, and trauma; police harassment; employer harassment; bank robbery; depression, anxiety, and behavioral problems; homicide; posttraumatic stress disorder; emotional impairment; closed head injuries; arson; embezzlement; factitious disorder; spousal abuse; custody issues; stalking; command hallucinations; addictions; kleptomania; gambling and substance abuse; insanity pleas; and hypnosis.

Harvey is certified by the American Board of Quality Assurance and Utilization Review Physicians, the American College of Forensic Medicine, the National Board of Medical Examiners, the Michigan Board of Marriage and Family Therapy, and is a Fellow of the American College of Forensic Examiners.  He is a member of the American Academy of Psychiatry and Law, the American Association of Quality Assurance and Peer Review Physicians, the American Psychiatric Association, the Michigan Psychiatry Society, the Michigan State Medical Society, and the Oakland County Medical Society.

Harvey is an Editorial Board Member of the publication for Oakland County Medical Society Members, and is the Managing Editor of the Newsletter for Chairing Committee for The Michigan Psychiatric Society.  He also sits on the Oakland County Medical Legal Committee; is a Psychiatric Consultant to several schools and a residential home for disturbed children; is a psychiatric member of a group practice of oncologists; and is a past Secretary and Board Member of Royal Oak Physician Group of William Beaumont Hospital.  Harvey has been elected to the legislative Assembly of Michigan State Medical Society; and is a Member of the Michigan Peer Review Organization and Blue Cross/Blue Shield of Southeast Michigan.
James Gilbert Houston, PhD
Criminal Justice Expert
Mr. Houston has more than 30 years in criminal justice, including more than 15 years in the US Bureau of Prisons.  His experience includes correctional department training and consultation; work release programs; jail policies and procedures; gang violence, including prison gangs; delinquency; drug abuse, including addiction relapse; juvenile justice system; criminal behavior; prison management; social service programs; probation policies; and public safety. 

James conceived and implemented the Grand Valley Criminal Justice Education Center which delivers education and training to the criminal justice community statewide; developed a graduate distance learning program; consulted and received air time on issues of contemporary interest for TV and radio programs on gangs, violence, and drugs as well as one PBS documentary.   He has been a visiting professor at The University of South Africa and Vaal University, and is a Certified Auditor for the American Correctional Association.
Steven C. Howard;
Police, Security, Weapons, and Ballistics Expert
Mr. Howard has 30 years of experience in police operations/conduct; security procedures; building, personal, personnel, and yacht security; self-defense claims; self-defense tactics; criminal evidence and procedures; DNA evidence; wildlife regulations and management; crime scene preservation; searches of homes, vehicles, and persons; drug enforcement operations; international border operations; electronic surveillance; questioning and interrogations; high speed pursuit driving; firearms training; detention center booking, fingerprinting, photographing, and in-processing procedures; arrest reports; illegal weapons; shotgun patterning; firearm and ammunition malfunctions; setting trigger pulls; defects in warnings and design; tool-mark identifications; internal, external, terminal ballistics; shooting reconstruction; gunshot residue and cross-contamination; stab and cut investigations; accidental discharge; ejections analysis; penetration testing; serial number restoration; weapon tampering; bomb and incendiary devices; weapons safety; forced entry tools; armor; armored cars and homes; weapons repair; ammunition reloading; tranquilizer guns; industrial manufacturing tools and equipment; hand tools; close circuit cameras; motion detectors; metal detectors; security doors; lock manipulation; alarm systems; asset verification; missing persons; document fraud; landlord-tenant law; family law and child custody; immigration and naturalization law; deportation hearings; social security law; and disability claims.

Steve's past and present certifications include: Certified Police Armorer and Gunsmith; NRA Certified Firearms Safety Instructor; and Federal Law Enforcement Agent. His degrees and education include: Juris Doctor; BS Degree in Criminal Justice; Police Science, Firearms, and Investigation Techniques; and AAS Degree in Gunsmithing. Steve is also trained in CPR, first-aid, tae-kwan-do, police baton, and knifemaking; and has received numerous shooting awards.
Daniel B. Kennedy, PhD, CPP, CSP;
Security and Safety Expert
Mr. Kennedy has more than 30 years experience involving security and safety issues including planning, implementation, training, and evaluation.  His expertise includes forseeability; standards of care; pursuits, use of force, and confinements; correctional reform; loss prevention; home and workplace violence; profiling; crowd control; lodging security; and victimization.

Dan's professional memberships include: the
Academy of Behavioral Profiling (Chair of Ethics Committee); the American Society for Industrial Security; the International Society of Crime Prevention Practitioners;  the International Council of Shopping Centers; the American Hotel and Motel Association; the Sociological Practice Association;  the Academy of Criminal Justice Sciences; the American Society of Criminology;  the International Association of Chiefs of Police;  the American Correctional Association; the American Jail Association; the Institute for Criminal Justice Ethics; the American Association of Suicidology (Co-Chair, Jail Suicide Task Force); the National Crime Victim Bar Association; and the International CPTED Association.
Theodore D. Kessis, PhD
DNA and Biology Expert
Dr. Kessis has more than 25 years experience in biology, including DNA and biology issues; Molecular Microbiology; Immunology; Gynecologic Pathology; Infectious Disease; Virology; and Pathobiology. 

Theodore holds a doctorate in Molecular Biology and Virology from The Johns Hopkins University.  He is a recipient of the Frederik B. Bang Award, as well as the National Research Service Award from the National Institutes of Health.
Robert C. Krause, MS, EMT-P, CFI;
Emergency Medical Services Expert
Mr. Krause has over 20 years experience in emergency medical services as an Emergency Medical Technician (EMT) performing Emergency Medical Services (EMS). His experience includes emergency vehicle driving operations; EMS chart and protocol reviews; EMS, EMT, and paramedic policies, procedures, and standards of care; emergency communications procedures; fire department operations, ambulance operations, fire department training procedures; fire suppression tactics; fire, rescue, and extrication operations; law enforcement policies and procedures; safety and security training; emergency medicine, including pediatric; medical records review; first responder training; OSHA compliance; water safety; telecommunications; respiratory and cardiac arrest; chemical agents, including WMD's; school violence and security; and workplace violence.

Bob is a member of The International Association of Firefighters (IAFF); The International Society of Fire Service Instructors; The International Association of Emergency Managers (IAEM); The National Fire Protection Association (NFPA); The National Association of EMS Educators; The National Academy of Emergency Medical Dispatch (NAEMD); The Association of Public Safety Communications Officials (APCO); The National Society of Collegiate Scholars (NSCS); and The National Flight Paramedics Association. Bob has given over a dozen EMS and EMT presentations nationally and internationally, and has contributed to several medical publications and professional journals.
Thomas J. Lekan, CPP;
Product and Premises Security Expert
Mr. Lekan has 25 years experience in security and safety.  His experience includes security systems design and evaluation; crime foreseeability; standards of care; causation issues; executive protection; assault; security guard operations; sexual harassment; negligent deaths; corporate fraud; security vulnerability and countermeasures; due diligence investigations; food and product tampering; product infringement/counterfeiting; security training; security management; economic crime; and police excessive force claims. Expertise includes educational institutions (elementary, high school, and colleges), restaurants, hospitals, lodging facilities, banks, residential communities, commercial and retail establishments, industrial facilities and manufacturing plants.   

Tom is a Certified Protection Professional (CPP) and is a member of the Faculty for the Graduate School of Retail Banking and the Graduate School of Bank Operations at the Bank Administration Institution; a member of the American Society for Industrial Security, serving on the Investigators, Physical Security, and Utility Committees; a Chairman of the Board of Security Commission of the Bank Administration Institution; and a member of the American Hotel and Lodging Security Committee.
Terry D. Lewis
Traffic Safety Expert; Private Investigator
Mr. Lewis has more than 25 years experience involving vehicle crashes, traffic safety, and private investigations, including auto, truck, tractor-trailer, bus, motorcycle, train, boat, and bicycle incidents; highway and traffic design, including pedestrian injury; driver perception and response; human factors and vision; vehicle "black box" analysis; seat belts and air bags; biomechanics of occupants; skip tracing-missing persons; and serving legal documents.                                                        

Terry is a member of the Society of Automotive Engineers and the National Association of Professional Accident Reconstruction Specialists.  He is a Security and Private Investigator, and is a court accepted expert in traffic accident reconstruction in Ohio and Michigan.  He is also trained as a police officer, a semi tractor-trailer driver, and in traffic accident investigations and event data recorders (vehicle black boxes).

Gary A. Mattiacci, CAP, CTAI, LPI
Crash Reconstruction Expert
Mr. Mattiacci has more than 15 years experience performing crash reconstruction for autos, trucks, motorcycles, bicycles, off-road vehicles, and pedestrians, as well as black box information recovery and evaluation.  Gary is a licensed  pilot and performs aerial photography to assist in evaluating highway and road defects.  Gary is also experienced in witness interviews, background checks, and skip trace assignments.

Gary is a member of the Michigan Association of Traffic Accident Investigators, and is a Certified Accident Reconstructionist, Certified Traffic Accident Investigator, and a Licensed Private Investigator.
Michael C. Mullins, LPI
Private Investigator
Mr. Mullins has more than 24 years experience in security and investigations, including background checks, witness locating and interviewing; missing persons searches; reference checks; insurance claim work; video and photography evidence gathering; theft, drug abuse and fire investigations.

Michael has experience in multiple areas of law enforcement, working his way up from a Patrolman to Chief of Police.  He has completed a Certified Safety Fire Inspectors Course as well.
John R. Nixon, PE
Firearms and Ballistics Engineer
Licensed Engineer in 26 states
Mr. Nixon has nearly 20 years experience involving firearms and ballistics including guns and ammunitions technology, design, manufacturing, usage, safety, supervision and failures.  His expertise includes weapons training, wound ballistics, non-destructive testing and ballistics "fingerprinting."

John's professional memberships include:  the National Society of Professional Engineers; the American Society of Mechanical Engineers; the Institution of Mechanical Engineers; the Expert Witness Institute; the Institute of Management; the Institute of Materials; the British Engineering Council of Professional Engineers; the UK Explosives, Safety, Performance, and Compatibility Committee; the National Rifle Association, and the Izaak Walton League of America.
Rob Painter, ASE, CFEI, CVFI, CFATE;
Senior Forensic Vehicle Analyst
Mr. Painter has over 20 years of experience in vehicle transponders, ignition locks, steering columns, and anti-theft systems; vehicle fraud; production and testing of keys and locks; air bags; fire and explosion origin and cause; vehicle collision repair; auto and medium/heavy duty trucks; vehicle brakes, steering, suspension, engines, drive train, axles, air conditioning, and electrical/electronic components; and auto dealership management.

Rob is a Board Certified Forensic Examiner; an ASE Certified Auto, Collision, Med/Hvy/Duty Truck Technician; a Certified Airbag Specialist; a Certified Forensic Auto Theft Examiner L-5; a Certified Vehicle Fire Investigator; and a Certified Fire and Explosion Investigator. He is a Member of The International Association of Forensic Auto Theft Examiners; The International Association of Arson Investigators (Multiple chapter membership); The North Central Regional Chapter of International Association of Auto Theft Investigators; The International Automotive Technicians Network; The South Carolina Insurance Fraud Investigators; The National Association of Fire Investigators; and The American College of Forensic Examiners.
Edward John Primeau, RI;
Audio and Video Expert
Mr. Primeau has over 35 years of experience in audio and video engineering and recording; background noise removal/sound clarification; voice identification; audio recording authentication; micro cassette transfers to any format audio; audio conversion to compact disc or any format; video authentication and restoration; video image clarification; frame capture from video; video conversion to DVD or any format; CD ROM and DVD design and programming; and acetate and vinyl restoration.

Edward is a Certified Video Expert and and ACFEI Registered Investigator (RI). He is a member, past or present, of The International Association for Identification; The Audio Engineering Society; The American College of Forensic Examiners; The Law Enforcement/Emergency Services Video Association; and The American Society of Information.
John Schmidt;
Dram Shop and Safety Expert
Mr. Schmidt has almost 30 years experience involving dram shop liability relating to alcohol sales, service, policies, procedures, security, supervision, and operations. His expertise includes: liquor law compliance and safety; underage drinking; intoxicated patrons at and upon leaving bars, restaurants, night clubs, bowling alleys, sports facilities, and special events; and undercover, financial, criminal, and regulatory investigations.

John is Certified as a Trainer for TIPS (Training for Intervention Procedures). He has participated in numerous training courses conducted by the New Jersey State Police, FBI and New Jersey Division of Alcoholic Beverage Control. He is a graduate from the New Jersey State Police Academy.
David A. Smith;
Audio Expert
Mr. Smith has over 25 years of experience in audio engineering, recording, and broadcasting; analog and digital audio analyses; speech comprehension enhancement; tape authentication techniques; computerized analysis and recovery; digital signal processing; MIDI implementation; voice recognition technology; and diagnostic platforms.

David is a member of The Audio Engineering Society; The American College of Forensic Examiners; and The International Society of Electrical and Electronics Engineers.
Alfred E. Staubus, PhD, PharmD
Toxicology and Pharmacology Expert
Dr. Staubus has over 35 years of experience in toxicology and pharmacology research including pharmacokinetics, biopharmaceutics, and radiology. He has special expertise including training, usage, and teaching with the following alcohol and drug testing machines: BAC DataMaster, Intoxilyzer 5000 and 8000, and Intoximeter EC/IR II.  

Al is an Associate Professor Emeritus in the College of Pharmacy at the Ohio State University and is a Member of the American Academy of Forensic Sciences, Toxicology Section; the Society for Scientific Detection of Crime (Past President); the American Society of Health-System Pharmacists; and was formerly on the Editorial Staff of the Journal of Investigative Radiology.

Kevin R. Theriault, ACTAR, CFC, CDS; Vehicle Crash Reconstruction Expert Mr. Theriault has over 25 years experience in law enforcement with special expertise in vehicle crash investigations and reporting. Expertise includes vehicle crashes (auto, truck, tractor-trailer, bus, motorcycle, bicycles, and off-road vehicles); FMSC regulations; vehicle and equipment inspections; documents research; DOT safety compliance; audit reviews; event data retrieval systems; alcohol and drug detection; emergency vehicle operations; air brake systems; ABS/FMVSS regulations; vehicle barrier crash testing; computerized accident reconstruction; biomechanics; railroad crossing incidents; driving fatigue; motor fleet safety principles and practices; fleet training; tractor trailer underride analysis; fleet risk management; police crash investigation procedures; traffic signal analysis; teaching accident investigation; and robotic scene mapping.

Kevin has a Certificate of Full Accreditation from the Accreditation Commission for Traffic Accident Reconstruction; is a Certified Crash Data Retrieval (CDR) Technician; a Certified Crash Data Retrieval (CDR) Data Analyst; is a Fellow of the American Board of Forensic Examiners; Certified Forensic Consultant; is a Certified Director of Safety, North American Transportation Management Institute; and has a Valid Virginia Operator's License with Motorcycle Endorsement. He is also a Member of The National Association of Professional Reconstruction Specialist, Inc; The Southeast Accident Reconstruction Society; and The Illinois Association of Technical Accident Investigators. Kevin also has taught Accident Investigation to several police, insurance, and medical groups.
Ralph W. Witherspoon, CPP
Security and Safety Expert
Mr. Witherspoon has more than 30 years experience involving premises security and safety including planning, implementing, training, and evaluation.  His expertise includes "negligent security" (for murder, rape, robbery, and assault); false arrest; shoplifting; arson; police liability; negligent hiring/firing; credit card and employee theft or fraud; and includes incidents at retail and lodging facilities, schools, the workplace, parking lots, special events, marine/shipping/port terminals, and restaurants, bars and lounges.

Ralph's professional memberships include: the International Association of Professional Security Consultants and the ASIS.  Ralph has also written the chapter entitled "Office Building Security" in the book Business Security, published in 2004 by Gary Publications, Las Vegas, NV.