Expert Witness Testimony
Expert Witness Testimony
Gerald McDevitt provides expert witness services in traffic collision reconstruction, forensic mapping, and related disciplines. His work is based on scientifically accepted methodologies, measurable data, and detailed analysis developed through decades of case experience.
He has been qualified and accepted as an expert witness in state, federal, and U.S. military courts. Each opinion is developed to meet evidentiary standards and withstand detailed technical and legal scrutiny.
Expert Support for Attorneys, Insurers & Investigators
From initial case review through trial, Gerald McDevitt provides direct expert support focused on clarity, accuracy, and defensibility. Technical findings are translated into clear, understandable explanations that assist attorneys in evaluating evidence and presenting their case effectively. All opinions are supported by documented methodology and measurable data, ensuring consistency between written reports, deposition testimony, and courtroom presentation.
SERVICES PROVIDED
- Case review and technical consultation
- Detailed expert reports
- Deposition testimony
- Trial testimony
- Rebuttal analysis of opposing expert opinions
- Technical support for case development and strategy
CASE TYPES HANDLED
Civil Litigation
Cases involving personal injury, wrongful death, and liability arising from vehicle collisions and related incidents. Each case includes detailed analysis, reconstruction, and expert reporting to support claims and establish defensible conclusions.
Criminal Cases
Cases involving vehicular homicide, DUI-related incidents, and other serious collisions requiring scientific reconstruction and expert testimony. Analysis is conducted to support accurate findings and clear presentation in court.
Federal & Military Cases
Cases involving federal agencies and U.S. military investigations requiring precise documentation and reconstruction analysis. This includes assignment to the ATF National Response Team for forensic mapping of the Charleston Sofa Super Store Fire, a multi-fatality line-of-duty incident.
Commercial Vehicle Cases
Cases involving commercial trucks, fleet vehicles, and multi-vehicle incidents requiring detailed reconstruction, analysis of vehicle dynamics, and evaluation of driver actions within complex roadway environments.
Military Court-Martial (UCMJ)
McDevitt and Associates, Inc. provides forensic reconstruction analysis for UCMJ court-martial proceedings involving vehicular manslaughter (Article 119), negligent homicide (Article 134), vehicular homicide, and felony DUI cases, and related offenses. Gerald McDevitt is a U.S. Air Force veteran who has been qualified as an expert in U.S. military courts. Retainer waived for UCMJ cases.
Emergency Vehicle Incidents
Incidents involving police, fire, and EMS vehicles, requiring analysis of response conditions, vehicle operation, and decision-making during emergency response situations, supported by accurate reconstruction and documentation.
Scientifically Grounded Methodology
All opinions are developed using scientifically accepted methodologies supported by physical evidence, scene data, and validated analysis techniques. Data may include reconstruction modeling, mapping, and measurements obtained through tools such as Emlid RS3 GNSS, Total Station surveying, Recon3D LiDAR-based documentation, and high-resolution digital imaging.
Each conclusion is supported by reproducible analysis and structured to meet admissibility standards required in legal proceedings.
Clear, Defensible Testimony
Gerald McDevitt provides deposition and trial testimony in complex cases involving technical reconstruction issues. Testimony is presented in a clear and structured manner, allowing judges and juries to understand complex findings without compromising scientific accuracy.
All opinions are prepared to meet Daubert and Frye admissibility standards and are supported by detailed documentation and analysis.
Why Attorneys Rely on Gerald McDevitt

Decades of reconstruction and courtroom experience

Qualified in state, federal, and military courts

Scientifically supported, defensible opinions

Clear communication of complex technical findings

Direct involvement in case analysis and opinions — no delegation of expert work.
Work Directly with a Qualified Expert Witness
Early expert involvement can be critical in evaluating evidence and developing a strong case strategy. Direct consultation is available to review case details and determine the appropriate analytical approach.
