Forensics Expert Witnesses: 30

California Main Office: 793A East Foothill Blvd., #200 San Luis Obispo, CA 93405

Global Forensic Services, LLC (GFS) is a Forensic Consulting, Laboratory and Investigative Firm offering over 44 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:

Questioned Documents Crime Scene Evaluation Trace Evidence Ink Analysis Age Determination Authenticity Fraud Investigations

Handwriting Daubert and Cold Case (consultant) Investigations Indented Writing Striations Typewriting Erasures Office Machines Tracing

Mr. Broyles represents 19 years experience in providing expert witness and forensic examination services combined with 32+ years experience in research, design & development of computer software and electronic products to include forensic lab equipment and forensic audio/video/image software.  This combination of experience gives invaluable insights into the forensic processes and application in each unique case or project.  Court Qualified.  Detail CV available on request.    

Areas of Expertise:

Audio, Video and Voice Recordings Voice Identification / Comparison / Elimination Forensic Transcription / Transcriptions Surveillance/Time Lapse Video Processing Authentication, Enhancement, Restoration Noise Reduction /Removal / Improve Intelligibility Video Frame/Field Capture and Printing Signal Recovery, Restoration and Clarification Magnetic Microscopy and Imaging Services Vintage/Obsolete Computer Data Recovery and Conversion, Translation

Digital Image/Photograph Analysis Recording Equipment Analysis and Testing Recording Equipment Restoration Playback Speed Correction Media Repair and Cleaning Services Many Tape and Digital Formats Supported Related Litigation Support Technical Research and/of Forensic Applications Dictaphone Restoration and Transfer Services

Specializing in Recorded Evidence Analysis, Enhancement and Restoration Services of Video, Audio, Image, Sound, Voice, Surveillance and Time Lapse Recordings; both digital and analog; through the use of custom and professional analysis systems.

Providing court qualified expert witness services to assist litigation support, public defenders, law enforcement, attorneys, government, and the general public.  Since 2004.  Local, nationwide and international.

Stated goal is to help you get the most from your recorded evidence.   Call now to get started.

Memberships, Affiliations and Training:

• Audio Engineering Society (AES)
• Institute of Electronics and Electrical Engineers (IEEE)
• Law Enforcement Video and Emergency Services Video Association (LEVA)
• New York Institute for Forensic Audio (NYIFA)
• International Association of Identification Rocky Mtn Division (RMDIAI)

George Reis is the president and owner of Imaging Forensics, Inc., and has been providing expert witness services and training in Forensic Image Analysis, Forensic Video Analysis, and Forensic and Technical Photography through Imaging Forensics since 2004. He is Certified in Forensic Photography and Imaging by the International Association for Identification, and is certified in Forensic Video Analysis by the Law Enforcement and Video Services Association (LEVA). He is a member of the editorial review board for the Journal of Forensic Identification.

Litigation Support -  Mr. Reis has testified more than 80 times in depositions and in Federal, State, Military Courts and Internal Court. He has provided training throughout the United States to individuals and agencies including the FBI, Secret Service, US Army Crime Lab; and internationally in England, Hong Kong, Singapore, Qatar, Canada, and Australia.

Mr. Reis worked from 1989 to 2004 at the Newport Beach Police Department in Southern California, as a forensic photographer, image analyst, crime scene investigator, and latent fingerprint examiner. He introduced digital imaging to that agency in 1992, making them one of the first law enforcement agencies in the world to utilize this technology.

• Image Analysis Services: 
  • Image and Video Analysis, Image and Video Authentication, Image and Video Enhancement, Comparative Analysis
• Forensic Photography:  
  • Items of Evidence, Close-up / Macro Photography, Exploded View Photography, Low Altitude Aerial Photography, Crime and Accident Scenes, Eyewitness Perspective, Reverse Projection / Reconstruction
• Training:
  • Over 1,000 police agencies have taken advantage of digital imaging training by Imaging Forensics — either through regional workshops or in-house training. Imaging Forensics offers regional workshops throughout the United States as well as in-house training to meet the needs of your agency.

A Special Education expert for five decades, Dr. Steven C. Imber served as a professor of special education from 1973 2021. He serves as a special education advocate, consultant to attorneys, parents and schools. He has conducted more than 600 independent educational evaluations.

Education:

• B.S. Psychology (High Honors) State University of New York at Buffalo
• Doctoral Studies, Clinical Psychology, University of Connecticut
• M.A. from the Department of Educational Psychology (Special Education - Learning Disabilities), University of Connecticut (Kappa Delta Phi)
• Ph.D. from the Department of Educational Psychology (Special Education -Emotional Disturbance (High Honors)

As a special education expert, Dr. Imber has worked on cases with children, adolescents and adults with a broad array of disabilities. He provides professional advocacy and consultation for children with the following disabilities:

• Autism Disorders
• Attention Deficit Disorders
• Emotional and Behavioral Disorders
• Emotional and Behavioral Disorders Intellectual Disabilities (Cognitive Deficits)
• Learning Disabilities
• Other Disabilities and Disorders

Areas of Expertise:

• Criminal Defense of Individuals with Disabilities – competence to stand trial and comprehension of Miranda Warning Rights
• Family Custody Matters involving Disputes regarding matters of Education and Special Education
• School Safety
• Special Education Regulations and Law
• Wrongful Death

Dr. Imber has been involved in cases from the following states: Alaska, Arizona, Connecticut, Delaware, Florida, Hawaii, Illinois, Massachusetts, Michigan, New Jersey, New York, Pennsylvania, Rhode Island, Tennessee, Utah, Vermont, Washington and West Virginia. 

Depositions and Direct Testimony
Dr. Imber has testified in federal court, various district courts, superior court, family and probate court and in numerous due process hearings since 1975.

Below are listed recent cases in which Dr. Imber provided testimony during depositions or directly in various court matters:

• October 21, 2021, Family Court: State of Hawaii, Plaintiff
• October 19, 2021, Hancock County Circuit Court, West Virginia Criminal Action, Defendant
• September 29, 2021, Chicago Public  Schools Cook County, Defendant
• July 6, 2021, Worcester County Probate and Family Court, Plaintiff
• August 10, 2021, Springfield District Court, Defendant
• May – June 2019, Commonwealth of Massachusetts, Division of Administrative Law Appeals, Bureau of Special Education Appeals BSEA, Plaintiff

Additional Accomplishments

• Published several articles in national and international journals within the fields of special education and psychology
• Presented at several local, state, regional, national and international conferences and meetings

Rhode Island Office Sprout Building 166 Valley Street Providence, RI 02909 Telephone: 401-421-4004

New York Office 61-43 186th Street Fresh Meadows, NY 11365 Telephone: 516-273-1961

Dr. Imber's CV is available upon request.

Dr. Joseph Greenfield is the Vice President and Chief Forensic Examiner with Maryman & Associates. He is a renowned Computer Forensics Expert with over 15 years of investigative experience, including cyber breach investigations, employee misconduct, and email recovery and analysis. 

Dr. Greenfield is also an Associate Professor of Information Technology Practice at the Viterbi School of Engineering at the University of Southern California, where he authored both the undergraduate cybersecurity and digital forensics programs. In 2014, the Ponemon Institute ranked USC as 6th in the nation for “Best Schools for Cybersecurity” and the highest ranked on the West Coast. In 2019, he co-created an interdisciplinary bachelor's degree in Intelligence and Cyber Operations, now a part of the USC Political Science and International Relations Department in the Dornsife College of Letters, Arts and Sciences.

Litigation Support - Dr. Greenfield has over 15 years of experience in digital forensics. He has testified for both plaintiff and defense in civil matters in state, federal, and international courts. He has examined over 2,000 pieces of digital evidence and worked on over 1,000 cases. He has also provided expert testimony in criminal matters.

Areas of Expertise:

Digitial Forensics Computer Forensics Cybersecurity  Cyber Breach Investigations Electronic Discovery / eDiscovery

Electronic Evidence Cell Phones / Mobile Devices Computers Email Analysis Deleted File Analysis and Recovery

 Dr. Greenfield completed his Ph. D. in Computer Science at the University of Rhode Island, where his research focused on parallel processing of all live files while creating a forensic bitstream image.

Dr. David L. Mitchell is an authority on the Numerical Modeling of Geophysical and Atmospheric Data with a Doctorate in Meteorology from Purdue University. Dr. Mitchell has over 28 years of technical modeling experience in industry and consulting.

Dr. Mitchell is a Court Qualified Expert in Air Modeling and Forensic Meteorology. His business experience includes various research, project management and technical consulting positions with Conoco, Getty Oil Company, Texaco, Tenneco, British Petroleum, Leviathan Gas Pipeline LLP and IBM Corporation.

Dr. Mitchell has extensive knowledge of Forensic Meteorology and has published his research results on the numerical modeling of atmospheric stability and convection. Dr. Mitchell is an expert in the field of Air Pollution Meteorology with over 28 years of experience with the mathematical modeling of wave propagation in elastic media, atmospheric fluid dynamics and air dispersion modeling.

Dr. Mitchell is a specialist in Weather Event Re-Construction for litigation and has provided expert testimony for numerous cases related to severe weather events and the application of Force Majeure clauses. He has provided forensic meteorology support for civil and criminal investigations and insurance cases involving weather related accidents, the release of toxic pollutants into the air, air pollution and weather related personal injury and property damage.

He is a member of the Air and Waste Management Association, the American Meteorological Society and the National Association of Environmental Professionals. Dr. Mitchell is also an Associate Member of the American Bar Association with affiliation with the Litigation Division and is a Certified Professional Geoscientist and a Licensed Professional Geoscientist (#1330) in the State of Texas, Certified by the Texas Board of Professional Geoscientists.

Degrees

Ph.D., Atmospheric Science and Meteorology, Purdue University 1976

M.S., Physics, Purdue University 1974

B.S., Physics and Mathematics (Dean’s Distinguished List), Baylor University 1972

Dissertation: A Theoretical Investigation of Atmospheric Convective Modes as a Function of Rayleigh Number, Prandtl Number and Eddy Anisotropy; 1977, Meteor. Soc. Japan, Vol. 55, No. 4, 341 – 363.

Certification and Honors

Court Qualified Expert in Air Modeling and Forensic Meteorology

Certified Professional Geoscientist, Licensed Geoscientist – Texas Board of Professional Geoscientists

Associate of the Scientific Research Society of North America

Sigma Pi Sigma, National Physics Honors Society

Distinguished Expert, National Forensic Center

Michael Levine is one of the most decorated Supervisory Agents in the history of the Drug Enforcement Administration. A US Law Enforcement Procedure Expert, Mr. Levine has many decades of courtroom experience (civil & criminal) as a Trial consultant and Expert Witness, including 25 years of service with DEA, Customs, BATF, and the IRS Criminal Investigations Division. Mr. Levine's supervisory and other law enforcement experience includes being in command of task force units combining officers of FBI, BATF, IRS, Customs, NYPD and other police agencies, service as an Internal Affairs supervisory investigator, a senior inspector with the Department of Justice OPR, Office of Professional Responsibility, and Director of a sheriffs department drug bureau. 

Mr. Levine, during his decades of trial experience, both as a senior law enforcement officer including the past 30 years as a professional trial consultant, has qualified as an expert witness for both prosecution and plaintiff as well defense, in federal and state courts including 19 states, Puerto Rico and 8 foreign nations. He offers full trial consulting and investigative services in both criminal and civil matters as follows: Expert Witness File Review and Strategy Assessment; Case Particular Design of Cross-Examination "menus"; Investigative, Technical and Research Support; Expert Witness Report and/or Affidavit Preparation. Utilizing his extensive experience as a Supervisory Internal Affairs Investigator, he can also identify the elements of probable cause indicative of false reporting, cover-up, and the concealment of Brady materials. Since the year 2007 he has been retained by the Atlanta and DeKalb County District Attorneys Offices, to conduct police-involved shooting reviews and as such has testified before criminal grand juries leading to the indictment and conviction of law enforcement/violators. 

Mr. Levine specializes in full trial consulting services and expert testimony in criminal and civil matters and has testified as an expert in the following areas of expertise:

Use of Force - Reasonableness, Excessive, Deadly Undercover Operations Police Misconduct Informant Recruitment, Management, Corroboration Investigative Procedures, Interview Tactics Evidence Handling RICO Title Three Investigations / Electronic Eavesdropping Devices Asset Seizures Narcotic / Drug Enforcement Undercover Use of Informants to Entrap

Internet Drug Trafficking Blind Mule Defense Undercover for Internet Child Predatory Practices Undercover Entrapment (all areas) Smuggling Money laundering International drug trafficking practices and mores Police Misconduct Official Corruption Reasonableness of Arrest Tactics, Raids, Search Warrants Cooperation Deals

A listing of his cases may be found on his website www.policetrialexpert.com.

Michael Levine is the only US law enforcement expert ever admitted to testify before a Japanese court, (Japan v Goldstein) and used the Blind Mule Defense, which resulted in an acquittal. He is a best-selling author, media consultant, lecturer and police instructor with extensive experience as court-qualified expert witness and trial consultant in civil and criminal matters.

Since leaving the Department of Justice, he has been retained in excess of 500 occasions as a trial consultant/expert witness throughout the United States, Canada, England and Japan. Mr. Levine has also remained active as a police instructor in the US, Canada and Australia. In January of 2008, his police instructional manual "Undercover Tactics and Informant Handling" previously written for the Department of Justice, was published by the New York State Department of Justice Services and utilized as an instructional manual for New York State law-enforcement. The manual was subsequently edited and republished by the US State Department for the instruction of Brazilian Federal Police which was conducted by Mr. Levine and his team of US-based experts. The manual was subsequently republished via academia.edu from where it is now among the top .05% of Global downloads by police agencies, attorneys and researchers.

 View Michael Levine's Consulting Profile.

Scott Cooper, Principal at Pegasus Squire, is retained by corporate and legal clients to deliver successful experience-based proactive and reactive solutions involving Electronic Discovery and Computer Forensics, Tactics and Strategy, and Expert Witness testimony and related services. He has over 30 years of experience in this space and has been recognized as an Industry Leader by the Southern California Business Journal, and have been featured in the New York Times.

Mr. Cooper's clients have included The White House, The US Department of Justice, General Electric, Exxon, Kirkland & Ellis, O’Melveny & Myers, Skadden Arps, and many other large national and international corporations and law firms dealing with litigation and internal (and external) investigations.

Litigation Support - A nationally recognized Expert in both Federal and State courts, Mr. Cooper has been utilized as a special master and designated as a court-appointed referee. He has also been involved in successfully supporting no-notice ex-parte computer evidence seizure motions and orders. Mr. Cooper's cases involve major corporate, financial, and oil & gas entities. His forensic services help companies and their lawyers through the steps associated with internal inquiries, governmental investigations, and litigation matters.

 Mr. Cooper's most notable engagement includes working with the prevailing party on the nation’s largest corporate Intellectual Property Theft case, which created numerous Federal precedents in the area of Electronic Discovery.

Areas of Expertise: 

Electronic Discovery Electronic Recovery Computer Forensic Analysis Intellectual Property Theft Industrial Espionage / Corporate Theft

Computer Systems Electronic Infrastructure Services Government Investigations Business Fraud Family Law Matters

View Pegasus Squire Inc.'s Consulting Profile.

POWERPLANT Specialists, LLC., (PPC) is a technical services company providing highly specialized support services for Industrial Power Generation Systems, Cogeneration and Combined Cycle Power Plants. PPC specializes in Design, Performance, Forensics, Construction, Design Defects, Cost Analysis for Lost Operations, Maintenance, and Repair. PPC has extensive international experience and is OSHA Lockout / Tagout Certified. Areas of Expertise

• Power Generation
• Marine Propulsion - Conventional / Alternative Fueled Systems
• Microturbines
• Boilers
• Industrial Gas Turbines
• Diesel Engines
• Cogeneration
• Geothermal
• Landfill
• Digester Gas
• Insurance Claims Investigation

Dr. Dennis Stainken has over 30 years of Industrial and Government experience managing Pollution Control and Hazardous Waste Projects. His experience includes assignments in engineering, analytical and toxicology sciences for regulatory compliance, product registration, risk assessment, technology development.

Dr. Stainken is a national expert in Environmental Toxicology & Ecological Research on the transport, fate and effect of pollutants, and in quality assurance in government and industry.

Areas of Expertise:

Health Effects Toxicology Chemical Exposure Health Issues/Physiology/Chemistry Water & Waste Water Ecological Services Contamination & Remediation Analytical Chemistry

Natural Resource Damage Assessments Property Assessments Hazardous Waste Water Quality Risk Assessment Wetlands Industrial Services Gasoline & Oil Issues

Principle Forensics is a national Media Forensics Laboratory. They Recover, Authenticate, Enhance, and Analyze all types of recorded evidence, including Video, Audio, and Digital Images. Principle Forensics backs all their work with experienced, highly trained, expert testimony.

Nick Barreiro, BAC, AVFA, DIVRT, Chief Forensic Analyst, is a Certified Audio Video Forensic Analyst and an FBI-trained member of the Digital Imaging and Video Recovery Team. During his 15-year law enforcement career, he was a patrol sergeant, technology project manager, media forensics expert, detective, digital evidence specialist, and patrol officer. Prior to his career in law enforcement, Mr. Barreiro was an audio engineer and producer in California. He also worked for KBMB radio in Sacramento and has extensive experience and training in audio enhancement and analysis.

Litigation Support - Mr. Barreiro works with attorneys representing plaintiffs and defendants in civil or criminal matters in which Audio, Video, or Image Evidence plays a key role. He has tremendous technical knowledge and training, but also extensive experience on the witness stand.

Mr. Barreiro has enhanced and analyzed digital media from simple slip-and-fall cases and minor traffic accidents to complex investigations such as homicides and officer-involved shootings. He has testified 100s of times in criminal cases, civil cases, arbitration, and depositions. A highly trained and experienced forensic analyst, he provides technically detailed and precise results with expedited turnaround times.

Video, Audio, and Image Forensics

Evidence Recovery Authentication Enhancement Synchronization Analysis Redaction

Photogrammetry Facial Recognition License Plate Recognition Public / Media Release Court Exhibit Preparation

Ray S. Kim, Ph.D., is a Licensed Clinical Psychologist and Board Certified Forensic Psychologist. Dr. Kim is also a Board Registered Mental Illness / Substance Abuse Provider, Diplomate of the American Psychotherapy Association, Diplomate of the American Board of Psychological Specialties, Fellow of the American College of Forensic Examiners Institute, and Fellow of the American College of Advanced Practice Psychologists. 

Dr. Kim is currently the Director of Chicago Metropolitan Forensic Services at the Illinois Department of Human Services where he supervises a team of clinical psychologists and social workers who evaluate the placement of individuals into forensic facilities. He also serves as the Director of Clinical Training at Chicago Metropolitan Forensic Services where he developed and supervises a forensic practicum program which provides opportunities for specialized clinical training in the area of forensic psychology. 

Litigation Support - Dr. Kim has testified in over 50 cases in both criminal and civil court proceedings. He is sensitive to the nature of legal matters, and provides comprehensive, timely, and professional services. Dr. Kim's services are available to attorneys or defendants seeking a qualified evaluator to help support a case, or wishing to obtain a second opinion on a legal matter already in progress. He is skilled in utilizing the field of psychology's most up-to-date assessments to provide recommendations for prosecution or defense teams. 

Areas of Expertise:

• Psychological Evaluations
• Pre-Sentence Evaluations
• Sex Offender Evaluations
• Violence Risk Assessments
• Competency to Waive Miranda Rights
• Diminished Capacity
• Fitness for Duty Evaluations
• Substance Abuse Assessments
• Independent Medical Examinations (personal injury, workers' compensation, disability determination, malpractice)
• Detection of Malingering
• Federal Evaluations (competency to stand trial, criminal responsibility)

View Dr. Kim's Consulting Profile.

George Schiro is a DNA Technical Leader - Forensic Scientist. His duties include incorporating the DNA Advisory Board (DAB) standards, accountability for the technical operations of the lab, conducting DNA analysis using the 13 STR core loci and Y STR in casework, DNA research, forensic science training and crime scene investigation.

Mr. Schiro has worked over 3500 cases and has qualified as an expert over 175 times in 31 Louisiana parish courts, Arkansas, California, Florida, Mississippi, Missouri, Nevada, New York, Texas, West Virginia, federal court, U.S. court-martial, and two Louisiana city courts. Has also consulted on cases in 29 states.

Qualified as an Expert in the Following Areas:

Latent Fingerprint Development Serology Crime Scene Investigation Forensic Science Trajectory Reconstruction Shoeprint Identification

Crime Scene Reconstruction Bloodstain Pattern Analysis DNA Analysis Fracture Match Analysis Hair Comparison Forensic Science Training

Setec Investigations offers unparalleled expertise in computer forensics and electronic discovery, providing highly personalized, case-specific forensic analysis and litigation support services to assist in the investigation, handling, and prosecution of computer-related crimes or misuse.

Setec Investigations combines today's most advanced computer forensics and litigation support expertise with a business- and legal-friendly approach, resulting in a sound analytical foundation that carefully balances critical investigative requirements with vital legal and evidentiary needs.

Setec Investigations incorporates a cross-disciplinary team comprised of computer forensic investigators, attorneys, law enforcement specialists, and seasoned business professionals who have established a proven track record of success since 1997.

Services Overview

Setec Investigations possesses the necessary combination of technical expertise, understanding of the legal system, and specialized tools and processes enabling the discovery, collection, investigation, and production of electronic information for investigating and handling computer-related crimes or misuse.

Explore our range of service offerings:

Computer Forensic Investigations

Computer forensics and enterprise investigation services identify, gather, analyze, and preserve electronic evidence to establish a sustainable posture for internal or legal action.

Electronic Discovery

Manage large volumes of electronic data and quickly identify and isolate electronic evidence that is critical to the success of a litigation.

Litigation Support

Legal consultants and attorneys translate litigation issues into strong case strategies that effectively utilize electronic evidence.

Expert Witness

Supports the resolution of security incidents and active litigations by offering impartial and independent expert testimony, opinions, and customized reports in legal proceedings.

David Smith specializes in Recording Authentication, Speech Enhancement, Voice Identification/Elimination & Forensic Audio Analysis. Sound Testimony's proprietary's hardware/software systems recover intelligible speech and other sounds from noise-intensive backgrounds & poorly recorded media. Mr. Smith has more than three decades of professional forensic audio analysis experience in criminal and civil cases including murder, corporate fraud, employment discrimination, sexual harassment, labor, and family law. Mr. Smith consults with counsel offering audio forensic evidence examination, analysis, litigation support, expert advice, expert testimony, and related expert witness services including preparation of cross-examinations and courtroom presentations. Clients include Prosecutors, Defense Attorneys, Family Law & General Practice Attorneys, other Legal & Investigative Professionals, HR Departments, Corporations, Private Detectives, & Individuals.

Services Offered:

• Recording Authentication / Tampering & Editing Detection
• Forensic Quality Enhancement / Voice and Sound Extraction
• Intelligibility Improvement
• Transcript Review & Correction
• Voice Recognition and/or Elimination
• Expert Testimony
• ALL services are available for Webcams, Body-cams, Dash-cams, and Security Cameras

Authentication and/or Intelligibility Improvement of:

• 911 calls
• Accidental Recordings
• Cell Phone Recordings
• Video Recordings
• Portable Recorders
• Interviews
• Depositions
• Meetings