expert witnesses
Demonstrative Evidence / Trial Presentations Expert Witnesses: 20
Audio Video Forensics Expert Witness Bryan Neumeister
Bryan Neumeister
Certified Audio & Video Forensic Expert
30 Lee Gate Lane
Grosse Pointe Farms Michigan
48236
USA
phone: (833) 872-3672
Audio Forensic Expert David Smith
David A. Smith, IEEE, AES
PA USA
phone: 814-410-4787
Computer Forensic Expert Todd Stefan
Todd Stefan
Executive Vice President
8391 Beverly Blvd. #167
Los Angeles CA
90048
USA
phone: 800-748-5440
Document Examination and Handwriting Expert Witnesses Riley Welch Laporte
Todd W. Welch D-ABFDE, Forensic Handwriting Expert
Gerry LaPorte, Ink Chemist/Document Dating Expert
PO Box 70
Frankenmuth MI
48734
USA, International
phone: 517-819-4277
As a Board-Certified Forensic Document Examiner (D-ABFDE) and Ink Chemist and Document Dating Specialist with over 33 years of experience, both Todd Welch and Gerry Laporte are world leaders in high-profile, extremely complex document cases.
Riley Welch LaPorte & Associates is the leading global forensic document firm, having conducted high-profile, multi-billion-dollar cases in the United Kingdom, France, Singapore, Hong Kong, Germany, Austria, Sweden, Canada, the Netherlands, Hungary, Israel, Switzerland, and Denmark. We are considered a top-tier firm, having conducted work for foreign governments, and are recognized globally by the most prominent law firms in the world for providing the highest level of forensic document examination services to both governmental and private entities.
Areas of Expertise:
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Committed to fostering education and promoting justice, both Todd Welch and Gerry Laporte contribute to the advancement of forensic science through leadership roles, including service on the BOD for the American Board of Forensic Document Examiners and American Society of Questioned Document Examiners; served as the 40th President of the Midwestern Association of Forensic Scientists (Welch); and served as members of the National Institute of Justice Forensic Science Technology Working Group.
Both Todd Welch and Gerry Laporte have testified as expert witnesses in numerous notable international ICSID cases (ICSID Case No ARB/06/8, ICSID Case No ARB/14/22, PCA Arbitration Case No 2020-21_The Hague) involving forensic document examination, handwriting analysis, ink dating, and forgery detection.
Their litigation support experience includes testifying before government officials, international tribunals, arbitrations, and mediations. Their testimony has been presented in courts worldwide handling a wide variety of legal matters including: defamation, investment law, insurance law, medical malpractice suits, will disputes, estate disputes, contract and patent disputes, trademark disputes, divorce disputes, and trade secrets cases.
Gerry Laporte and Todd Welch have international notoriety and have testified in major courts such as the International Centre for Settlement of Investment Disputes (ICSID), the Permanent Court of Arbitration (PCA) under UNCITRAL Rules, the International Criminal Court (ICC), the U.S. District Court for the Eastern District of New York, and appellate courts in Illinois and Washington, D.C., among others. Their involvement in high-stakes litigation across multiple geographical jurisdictions confirms their reputation and widespread professional acceptance worldwide.
Jennifer L. Naso is a board-certified Forensic Document Examiner with over two decades of experience in forensic science and questioned document examination. She has served as a Forensic Document Examiner with Riley, Welch, LaPorte & Associates since 2011, where she conducts examinations involving handwriting identification, signature authenticity, document alterations, indented writing, obliterations, document authentication, printing processes, and other aspects of forensic document analysis. In addition to conducting casework, she provides technical reviews of examinations completed by other forensic document examiners.
Prior to joining Riley, Welch, LaPorte & Associates, Ms. Naso served as a Document Analyst with the United States Secret Service (USSS), where she successfully completed the agency's rigorous Questioned Document Examiner Training Program. During her tenure with the Secret Service, she conducted examinations in support of criminal investigations involving handwriting, questioned documents, and counterfeit materials.
Firearm Tool Mark Examination Expert Witness Dean Molnar
Dean S. Molnar, Jr.
Firearm and Toolmark Examiner
PO Box 70
Frankenmuth MI
48734
USA, International
phone: 517-819-4277
Dean S. Molnar, Jr. is a highly trained and exceptionally experienced Firearm and Tool Mark Examiner, Crime Scene and Firearms Trajectory Analyst, and a proven leader in the field of Forensic Science Operations and Quality Assurance. Mr. Molnar has over 25 years of experience as a certified law enforcement officer and State Trooper, and over 17 years of experience serving as a firearm and tool mark examiner, firearms and tool mark unit supervisor, and laboratory director with the Michigan State Police (MSP) Forensic Science Division.
Litigation Support - Mr. Molnar's experience as a forensic firearm and tool mark examiner includes recognized expert testimony in over 140 criminal cases in both state and federal courts involving both firearms and tool mark identification, crime scene investigation, and shooting reconstruction. He has personally processed over 60 homicide scenes during his career, including scenes involving shooting reconstruction, photography, and documentation.
Areas of Expertise:
- Firearms function, operability, alterations, defects, conversions, modifications, accidental discharge
- Cartridge manufacture and source determination of ammunition components
- Shooting scene (trajectory) reconstruction
- External and/or terminal ballistics calculations and determinations of the projectile’s trajectory, ricochet, penetration, etc
- Distance determinations (muzzle-to-target determinations) from gunshot residue patterns or shot pellet patterns
- Serial number restorations (firearms, motorcycles and other vehicles, bicycles, etc.) – anything with an identifying characters, numbers or markings that have been obliterated either intentionally or by wear or corrosion
Background Experience - Mr. Molnar’s leadership experience has included firearms unit supervisor duties at three different laboratories. He currently serves in a key role as the Laboratory Director at the Michigan State Police-Lansing Laboratory where he is specifically assigned as the operations director for pattern disciplines.
Mr. Molnar also has over seven years of quality assurance experience as an ANSI National Accreditation Board (ANAB) assessor. His years of experience include almost 15 years of ongoing training within an extremely professional and accredited crime scene processing program at MSP, along with even more specialized training in firearms trajectory analysis. Mr. Molnar holds a Bachelor of Science in Fire Science and a Bachelor of Science in Criminal Justice from Lake Superior State University. He is a long-time member of the Association of Firearms and Tool Mark Examiners (AFTE) and is also a member of the American Society of Crime Laboratory Directors (ASCLD).
Latent Print Examination Expert Witness Robert May
Robert J. May
Latent Print Examiner
PO Box 70
Frankenmuth MI
48734
USA, International
phone: 517-819-4277
Robert J. May has a distinguished career spanning more than 30 years, with experience in Forensic Analysis, Executive-level Management, and Quality Assurance. He is a Latent Print Examiner with nearly 25 years of experience and has been a consultant with Riley, Welch, LaPorte and Associates for roughly 20 years.
Litigation Support - Mr. May has conducted latent print casework and technical reviews across the United States and beyond, having been qualified as an expert witness across multiple jurisdictions. He provides clear, accessible expert testimony, affidavits, and consultation to attorneys, investigators, and courts, translating complex latent print, crime scene, and forensic imaging issues into opinions that can be understood and evaluated by judges and juries. Mr. May has never been excluded as an expert or from testifying as an expert witness in any County, State, Federal, Arbitration or Administrative proceeding.
Areas of Expertise:
- The Use of Automated Fingerprint Identification Systems (AFIS)
- Fingerprint Comparison and Identification Methodology
- Digital Enhancement Techniques
- Crime Scene Processing
- Evidence Processing and Documentation Using a Variety of Physical and Chemical Techniques
- Latent Print Visualization Using Alternate Light Sources and Lasers
- Subject Matter Expert in Digital Photography (taught crime scene and general photography for multiple agencies)
In addition to technical acumen in his forensic specialties, as a Laboratory Executive, Mr. May is a recognized leader in the forensic community. He has served as a laboratory director across multiple systems, with broad knowledge of lab operations, facility design, policy development, budgeting, human resources, metrics, process evaluation, and more.
Background Experience - Mr. May has a diverse background in both forensics and law enforcement. Prior to his current position as the Crime Lab Manager for the Corpus Christi (TX) Police Department’s Forensic Services Division, Mr. May spent 26 years as a trooper with the Michigan State Police, one of the nation’s premier law-enforcement agencies. Aside from considerable knowledge of general investigations and law-enforcement operations, his deepest expertise, and greatest passion, lies with forensic science. Mr. May spent most of his career within the MSP Forensic Science Division, beginning as a technical expert in latent prints, crime scene investigation, and forensic photography. He rose to the position of supervisor in latent prints and was ultimately promoted to laboratory director at the Sterling Heights Laboratory in Metro Detroit. He retired in 2020 as a decorated command officer with multiple commendations to his name, including awards for professional excellence and lifesaving, among others.
Forensic Biology DNA Expert Witness Kirk DeLeeuw
Kirk DeLeeuw
Forensic Biologist, DNA Consultant
PO Box 70
Frankenmuth MI
48734
USA, International
phone: 517-819-4277
Kirk DeLeeuw is a highly regarded and accomplished Forensic Biology and DNA Consultant / Expert Witness both nationally and internationally. He has over 20 years of dedicated experience in Molecular Biology and Forensic Science and is well respected worldwide.
Mr. DeLeeuw's career is defined by a deep technical mastery of DNA analysis, including specialized expertise in interpreting complex multi-contributor samples using Probabilistic Genotyping Software (PGS) such as STRmix. Mr. DeLeeuw is licensed by the Texas Forensic Science Commission. He likewise has a comprehensive understanding of FBI Quality Assurance Standards (QAS) and ISO/IEC 17025 accreditation requirements. He applies the standards through meticulous auditing of case files, bench notes, and high-volume electronic data files and images.
Litigation Support - Beyond the laboratory, Mr. DeLeeuw is a seasoned Expert Witness, qualified to provide testimony in Body Fluid Identification / Serology and DNA Analysis across numerous jurisdictions. He has provided sworn affidavits and oral testimony in federal, circuit, and district courts in many states including Washington DC, and internationally in the Royal Turks and Caicos Islands. His ability to translate sophisticated molecular biology data into clear, accessible testimony ensures that scientific integrity remains paramount during both civil and criminal litigations.
Mr. DeLeeuw maintains technical proficiency through a rigorous commitment to continuing education, frequently attending the International Symposium on Human Identification and National CODIS Conferences. His hands-on experience spans a wide array of instrumentation, including Applied Biosystems Genetic Analyzers and Hamilton robotic workstations, as well as various quantification and amplification kits. This combination of technical expertise, regulatory knowledge, and proven courtroom experience allows him to provide unparalleled oversight and analysis in the field of forensic DNA.
Areas of Expertise:
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Background Experience - Mr. DeLeeuw's extensive professional background includes high-level roles across private and public sectors. As a Forensic DNA Analyst at DNA Labs International, he analyzed casework from across the United States and internationally, utilizing advanced PCR/STR-based methods and various chemistries. Prior to that, he served for nearly 20 years as a Forensic Scientist for the Michigan State Police.
Forensic Safety Engineering Expert Witness Kevin Smith
R. Kevin Smith, P.E., D.F.E.
President, R. K. Smith Engineering
1539 Chalone Ct.
Crown Point IN
46307
USA
phone: 219-226-9510 (Office)708-790-1938 (Cell)
Document Examination Expert Mike Wakshull
Mike Wakshull
MS, CQE, PMP, CISA
P.O. Box 892965
Temecula CA
92589
USA
phone: 951-252-4929
fax: 805-501-3388
Audio Video Forensic Analysis Expert Witness Nick Barreiro
Nick Barreiro, BAC, AVFA, DIVRT, AFCE
Chief Forensic Analyst
6688 Nolensville Rd
Suite 108-129
Brentwood TN
37027
USA
phone: 615-854-8055
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, AFCE, 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.
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 conducted hundreds of forensic audio, video, and image investigations in the United States and internationally. He has enhanced and analyzed thousands of digital files, ranging from simple slip-and-fall cases and minor traffic accidents to complex investigations such as homicides and officer-involved shootings. He has been court-certified as an expert and provided expert testimony in criminal cases and civil litigation in federal and state court. A highly trained and experienced forensic analyst, he provides technically detailed and precise results with expedited turnaround times.
Video, Audio, and Image Forensics
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Construction Claims Experts Long International
Richard J. Long, P.E., P.Eng.
Founder
Corporate Headquarters:
10098 Whistling Elk Drive
Littleton CO
80127-6109
USA
phone: (303) 972-2443
fax: (303) 200-7180
Florida Office:
Andrew Avalon, PE, PSP
Chairman & CEO
8633 Willow Kane Court
Orlando, FL 32835
aavalon@long-intl.com
T: (407) 445-0825 F: (407) 650-3399
Long International provides expert engineering and construction claims analysis, expert testimony, project management consulting, and insurance claims analysis services. We focus on projects in the following industries: building and construction; gas, gasification, GTL, LNG, and NGL; industrial and manufacturing; mineral and mineral processing; offshore oil and gas; oil sands; pipelines and utilities; power; refineries, petrochemical, and chemical; transportation; and water, wastewater, dams, and marine. We analyze claims, not limited to, disputed change orders, schedule delay, acceleration, time extensions, liquidated damages, loss of productivity, defective specifications, and deficient project management performance.
Richard J. Long, P.E., P.Eng., Founder of Long International, has over 50 years of U.S. and international consulting experience involving construction contract disputes analysis and resolution, arbitration/litigation support and expert testimony, project management, engineering/construction management, cost and schedule control, and process engineering. As an internationally recognized expert in the analysis and resolution of complex construction disputes for over 35 years, Mr. Long has served as the lead expert on over 300 projects having claims ranging in size from US$100,000 to over US$2 billion. He has presented and published numerous articles on claims analysis, entitlement issues, CPM schedule and damages analyses, cumulative impact claims, and claims prevention.
Rod C. Carter, CCP, PSP is President of Long International and has over 20 years of experience in construction project controls, contract disputes and resolution, negotiations, mediation, arbitration support, and expert testimony on scheduling, loss of productivity, and quantum issues. He has experience in entitlement, schedule, and damages analyses on over 30 construction disputes ranging in value from US$100,000 to US$7 billion, related to oil and gas, oil refinery, LNG, heavy civil, nuclear, environmental, chemical, power, industrial, commercial, and residential construction projects. Mr. Carter specializes in loss of productivity, cumulative impact, and quantum calculations, and had a lead role in assessing damages on more than a dozen major disputes. In addition, Mr. Carter has developed cost and schedule risk analysis models using Monte Carlo simulations to address the uncertainty of estimates and claims.
Scott M. Francis, P.E., PSP is a Vice President of Long International and has over 20 years of experience in project management, contract disputes analysis and resolution, CPM schedule preparation, execution, and analysis, productivity analysis, contract administration, design engineering, construction management, and government contracting. He provides schedule development and assurance services, cost estimating, and claims analysis services on projects for both owners and contractors. Specific responsibilities include CPM development and reviews, CPM schedule delay and acceleration analyses, change order impact analysis, issue identification, correlation of impacts to schedule activities, and productivity evaluations.
Forensic Document Examiner Expert Witness Laurie Hoeltzel
Laurie A. Hoeltzel , PhDc
Serving Clients Nationwide
USA
phone: (Cell) 310-985-2807
fax: 800-652-9901
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