Demonstrative Evidence / Trial Presentations Expert Witnesses: 18

4CA Consulting & Reconstruction is a General Accident Reconstruction Company, providing Expert Services in the field of Accident Reconstruction, including:

• A complete an unbiased accident investigation, using the latest investigative means such as Crash Data Retrieval & Analysis.
• Crash Scene Analysis and Documentation: Vehicles, light trucks, motorcycles.
• Seat Belts and Child Safety-Seats usage analysis
• Occupant injury kinematics, speed determination, time - distance, drag factor with use of Vericom Vehicle Computer System.
• Traffic Studies.
• Crash Animation / Simulation, Map scenes, Crash Zone, CAD.

About Kevin Forcier: ACTAR Certified Reconstructionist: #2054. Retired from the Pennsylvania State Police in April of 2010 after 25 years of service. Accident Reconstructionist since 1990, last four years as a full time Crash Analysis and Reconstruction Specialist responsible for the coverage of 3300 square miles of Northwestern Pennsylvania. Qualified Expert Witness in the field of Crash Reconstruction and related services.

Dr. John R. Black is a recognized expert with extensive experience in international, federal, and state courts on Lethal Force, Police Use of Force, Officer-Involved Shootings, and Civilian Self-Defense, blending forensic analysis with human-centered perspectives and systems thinking. Dr. Black employs a systems thinking approach that enables him to view incidents from multiple perspectives. He regularly speaks to Police leadership, investigators, lawyers, and organizations about how we think about the process of inquiry, our biases, and our sensemaking.

Litigation Support - Dr. Black is qualified as an expert witness in state and federal courts related to police practices, police use of force, decision-making, officer-involved shootings, police tactics, police training, incident command, and police / jail operations. He is also qualified with similar expertise for civilian self-defense and use of force events.

Expert in Use of Force & Lethal Force Incidents & Decision-Making

In cases involving force--lethal force, understanding decision-making is as critical as the facts themselves. Whether you are a defense attorney explaining your client’s actions or a prosecutor challenging them, you need an expert who integrates both events and decision-making processes. Dr. Black offers a unique approach, blending quantitative precision with qualitative insight into how individuals make sense of their world. he is a recognized expert with experience in international, federal, and state courts on lethal force, police use of force, officer-involved shootings, and civilian self-defense. He combines forensic analysis with human-centered perspectives, ensuring a balanced view that benefits both defense and prosecution.

Advanced Forensic Video and Qualitative Analysis

Video evidence often plays a pivotal role in determining the facts. Dr. Black is skilled in forensic video analysis, using Amped Five software to extract key details. What sets him apart is his ability to combine video analysis with qualitative thematic tools like Atlas.TI, understanding both what happened and how individuals interpreted their environment under stress.

Cognitive Interviewing and Human Performance Expertise

Dr. Black specializes in cognitive interviewing, exploring clients’ mindsets during critical moments leading up to the use of force. His approach bridges the quantitative analysis of human performance with qualitative insights into violent encounters, offering a comprehensive view of why actions were taken.

Military and Law Enforcement Expertise

With 30+ years in U.S. Army Special Forces and 23+ years in law enforcement, Dr. Black brings unmatched experience to each case. He provides practical insights grounded in real-world experience. His background ensures a comprehensive understanding of how policy, training, and decision-making intersect under pressure.

View Aragon National, Inc.'s Consulting Profile.

SERVICES: Audio and video recording authentication, enhancement, transcription, and analysis, including body worn camera and security video recordings. Acoustic forensic analysis, including audibility of warning signals, speech - voice comparison, and gunshot - weapon recording analysis (e.g., Taser, ShotSpotter).  Audio technology and patent expert witness/consultant. Forensic musicology analysis. Forensic field recording and analysis per ANSI and recognized standards.

EXPERTISE: Consultation in over 800 audio-video and acoustic forensic cases since 1987. Expert testimony over eighty times, in U.S. Federal and State courts including the United States International Trade Commission (USITC), and courts in Canada and International arbitration panels (World Bank-ICSID).

DEGREES/MEMBERSHIPS: Ph.D. UC San Diego (Computer Audio) 1987; Fellow, Audio Engineering Society (AES); Member, Society of Forensic Engineers and Scientists (SFES), Acoustical Society of America (ASA).

Katherine Mainolfi Koppenhaver, a Board Certified Document Examiner, has been a document examiner for the past 40 years and has testified in court and deposition over 550 times. She has an international clientele. Her book, "Attorney's Guide to Document Examination," was published by Greenwood Press in 2002. Humana Press has recently released her latest book, Forensic Document Examination, Principles and Practice. She has a  support staff enabling her to handle cases in a timely manner.

Contact Forensic Document Examiners for:

• Examination of Questioned Documents
• List of 101 Places to Look for Handwriting Specimens
• Request Writing Forms and Instructions
• List of Publications
• Fee Agreement Contract
• Fee Schedule
• References

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:

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:

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)

Laurie Hoeltzel, PhDc, a Forensic Document Examiner, has studied handwriting examination and apprenticed under some of the leading court-qualified Forensic Document Experts in the United States. She spent 11 years serving her country in the United States Air Force, including three tours of duty in Iraq, while obtaining a Bachelors degree and Document Examination Certificates. Laurie Hoeltzel has been 100% court-qualified and her testimony has always been allowed.

Litigation Support - Ms. Hoeltzel has reviewed numerous signatures and handwritings, examined case documents, and rendered an opinion on cases in AZ, AL, CA, CO, DE, FL, GA, IN, IA, IL, KS, KY, LA, MI, MD, MO, NV, NJ, NM, NY, NC, NY, ND, OH, OK, OR, PA, SC, TN, TX, UT, VT, VA, WV, WI, WA, Washington D.C.; Montreal & Quebec Canada; Freeport & Nassau, Bahamas. She is court-qualified and attorney-recommended. With over 20 years of experience, she is available for depositions and court testimony when necessary, Ms. Hoeltzel offers her expertise to counsel for both plaintiff and defendant NATIONWIDE!

Areas of Specific Training:

• Handwriting Identification
• Signature Comparison
• Distinguishing Forged Signatures Techniques
• Disguised Handwriting
• Altered Numbers
• Anonymous Writing
• Factors that Affect Writing

Disputed Documents or Signatures Analysis on: Wills, checks, contracts, deeds, account ledgers, mortgages, loans, notary disputes, and medical records. Investigation and Analysis for: Questioned signatures, suspect documents, forgeries, identity theft, robo-signing, anonymous letters, bond authentication, alterations, obliterations, erasures, typewritten documents, altered medical records, graffiti, handwritten numbers, suicide notes, and computerized and handwritten documents.

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.

Mr. V C Misra is a leading Forensic Handwriting, Finger Print and Document Examiner with over 21 years of experience. He has solved and given opinion on thousands of cases in India, UK, USA, Canada, Japan, Australia, Germany, Italy, France, Russia, South Africa and UAE. Mr. Misra's Expertise Includes:

• Examination of Handwriting, Signatures, Fraudulent Additions and Alterations
• Approximate Age of Documents
• Photo Static and Scanned Transplantations of Signatures
• Traced, Freehand and Impersonation Forgeries
• Denial of Normal or Disguised (Changed) Signatures
• Anonymous Letters
• Body Writings on Account Opening Forms
• Denial of Withdrawal of Money
• Development of Latent Finger or Palm Prints from the Cheques
• Bank Documents by Ninhydrin (Chemical) Method Used for Impression Sweat on Paper
• Opinions on Folds
• Sequence of Strokes and Distinction Between Inks
• Insertion of Typed or Printed Matter
• Fake Currency Notes
• Credit Card Forgeries
• Identification of Computer Typed Documents
• Fake Seals and Rubber Stamps

Mr. Misra's Expert Opinion is Available in the Following Languages: English; French; German; Russian; Spanish; Hindi; Gujarati; Urdu; Marathi; Regional Languages of India or Abroad. Clients Include:

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

Mike Wakshull is a civil and criminal court-qualified document examiner who partners with legal clients to dissect the evidence presented in handwritten and computer-generated questioned documents. His valid approach often produces winning arguments during the trial. Wakshull applies his scientific training to examine questioned documents which is a court requirement. He uses generally accepted practices such as SWGDOC and ANSI/ASB standards. His laboratory is well-equipped with high powered digital microscopes, VSC80, ESDA, high quality digital scanners, and software. He has built a large forensic reference library. Wakshull is skilled at creating and explaining complex exhibits in easy-to-understand language and pictures. His courtroom approach is to teach and engage the trial participants—opposing attorney, judge and jury.

Mike Wakshull holds a graduate school certificate in Forensic Document Examination. Since 2010 Mr. Wakshull has worked and studied in the science and discipline of Document Examination and Handwriting Analysis. He is one of only a handful of forensic document examiners with graduate school training in the science of forensic document examination. His opinion is always based on sound fundamentals of evidence. Mr. Wakshull has spoken at International and local conferences and seminars and also holds professional certifications that bring unique skills to your case. As a Certified Quality Engineer, Mr. Wakshull studied the science of variability and applied this to the analysis of handwriting and documents. As a Certified Information Systems Auditor, he applies his knowledge of information systems and technology to the analysis of documents.

Q9 Consulting, Inc. Has both an extensive research library and laboratory. Q9 Consulting, Inc. serves Southern California counties of Riverside, San Diego, Orange, San Bernardino, and surrounding regions. Mike has worked cases from 29 states and five countries. Work is accepted from all other locations.

Areas of Expertise:

View Mike Wakshull's Consulting Profile.

R. Kevin Smith PE, BSME, MMAE, has been a specialist in Engineering Forensic Safety and Design for 35 years. He has consulted on over a 1,000 matters nationwide. Mr. Smith is a registered professional engineer and holds a BSME and MMAE from the Illinois Institute of Technology in Chicago. He is board certified forensic engineer through the National Academy of Forensic Engineers. He specializes in Material Handling Equipment Safety, including lift trucks, dock safety, truck loading, conveyors, and aerial work platform safety. 

Mr. has been actively involved as a member of the committee that writes the Safety Standard for Low Lift and High Lift Trucks (ASME/ANSI B56.1) for over 30 years. He also serves on the B56.6 committee (rough terrain lift trucks) and the ANSI A92.5 and A92.6 subcommittees (self-propelled elevating work platforms).

 Litigation Support - Mr. Smith formerly worked for Triodyne, Inc. for over 15 years as a forensic engineer/principal engineer. As President of R. K. Smith Engineering Inc., for over 25 years, he currently has a laboratory for examination and testing,and owns or has access to varied testing equipment and tools.He has testified at depositions and trials on several hundred matters. Mr. Smith has performed hundreds of investigations into product failures involving injury and property damage, and has reconstructed numerous accidents. His expertise is available to counsel representing both Plaintiff and Defendant. Mr. Smith also was previously on the Adjunct Math faculty at Prairie State College for 13 years. 

Areas of Expertise:

View R. Kevin Smith's Consulting Profile.

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, 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:

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 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.

Consultants. Experts. Innovators.™

Operating from more than 110+ offices around the globe, we provide services to corporations, insurance companies, law firms, and government agencies. 

Our quantum and delay experts are experienced in the following areas:

Whether the matter relates to construction or insurance, we bring years of valuable industry experience to help our clients limit long and costly formal proceedings. Our experts can operate individually or collaboratively as an integrated team, providing clients with unbiased assessments of construction delays and their cost implications and contract dispute assistance. Backed by evidence and research, Rimkus experts serve as impartial voices, presenting compelling arguments and providing professional testimony that sheds light on the critical intricacies of complex, global issues.

Rimkus Global Services Overview

OUR EXPERT SERVICES EXPERTISE

DELAY EXPERTS

Construction delays can have significant financial implications and lead to strained relationships on a project. Rimkus delay experts understand schedules, project management, and contractual obligations. We can analyze complex timelines, identify causation, measure the effect on the project’s deliverables, and provide expert opinions that stand up to scrutiny in legal proceedings. Our Delay Experts are experienced in the following areas:

• Extension of Time Assessment
• Disruption Analysis
• Project Planning
• 4D Modelling and Visualization

QUANTUM EXPERTS

Quantum disputes require a unique set of skills and expertise. Rimkus’ quantum expert witnesses specialise in evaluating and quantifying the financial loss or damage from a variety of matters, including breaches of contract, valuation issues, or financial loss claims. In addition, our team is often engaged on expert advisory commissions, helping clients build an appropriate commercial strategy to navigate a complicated or contentious issue and assisting the client in achieving its targets. Our quantum specialists are well-versed in all aspects of dispute resolution, whether through litigation, arbitration, adjudication, mediation, or complex negotiation. Several members of the Rimkus quantum team are multilingual, allowing us to help clients from jurisdictions across the globe. Our Quantum Experts are experienced in the following areas: 

• Contract Administration
• Damages Claims 
• Quantity Surveying Best Practice
• Quantum Assessment and Analysis
• Loss and Expense Claims 

Visit our full suite of: Delay and Quantum Expert Services.

GLOBAL OFFICES

Rimkus operates from 110+ offices worldwide, with headquarters in the following cities.

View a full list of Rimkus Office Locations.

View Rimkus Forensic Expert Services Profile. 
View Rimkus Life Sciences Expert Services Profile.

Consultants. Experts. Innovators.™

Operating from more than 110+ offices around the globe, we provide services to corporations, insurance companies, law firms, and government agencies.

Rimkus experts specialize in forensic consulting and construction dispute resolution in the hospitality, retail, and restaurant; industrial; marine; oil and gas; power and renewable energy; transportation; and pharmaceuticals industries.

Rimkus experts solve complex challenges wherever in the world they occur. We are dedicated to serving our clients so they can achieve timely resolution of accidents, claims, and legal disputes.

Our highly diversified, global team of engineers, scientists, architects, and technical specialists systematically evaluates all available evidence, applies scientific principles, specialized knowledge and, when appropriate, utilizes the latest analytical technologies to arrive at scientifically sound opinions and solutions for our clients.

Rimkus Global Services Overview

OUR FORENSIC SERVICES EXPERTISE

View our full suite of Forensic Expert Services

GLOBAL OFFICES

Rimkus operates from 110+ offices worldwide, with headquarters in the following cities.

View a full list of Rimkus Office Locations.

View Rimkus Quantum and Delay Expert Services Profile.
View Rimkus Life Sciences Expert Services Profile.