Expert Witness Testimony in State, Federal & Military Courts
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. His methodology is developed to meet Daubert and Frye admissibility standards.
Expert Support for Attorneys, Insurers & Investigators
From initial case review through trial, Gerald McDevitt provides direct expert support focused on clarity and accuracy. Technical findings are translated into plain explanations that help attorneys evaluate the evidence. All opinions are supported by documented methodology and measurable data, so written reports, deposition testimony, and courtroom presentation stay consistent.
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, for plaintiff or defense counsel. Each case includes detailed analysis, reconstruction, and expert reporting.
Criminal Cases
Cases involving vehicular homicide, DUI-related incidents, and other serious collisions requiring scientific reconstruction and expert testimony, for prosecution or defense. 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 careful documentation and reconstruction analysis. Under a United States Marshals Service special deputation, he provided forensic mapping assistance to the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) during the investigation of the Charleston Sofa Super Store Fire, a multi-fatality line-of-duty incident involving nine firefighters.
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 involuntary manslaughter (Article 119), negligent homicide (Article 134), drunken or reckless operation of a vehicle (Article 113), and related offenses. Gerald McDevitt is a U.S. Air Force veteran who has been qualified and accepted as an expert witness in courts-martial. Retainer waived for government and military counsel.
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 accepted scientific methods supported by physical evidence, scene data, and documented analysis. Data may include reconstruction modeling, mapping, and measurements from an Emlid Reach RS3 GNSS receiver, a Sokkia reflectorless total station, Recon3D handheld LiDAR, and high-resolution digital imaging.
Each conclusion is supported by reproducible analysis, with the methodology documented.
Clear, Documented 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.
His methodology is developed to meet Daubert and Frye admissibility standards, and each opinion is supported by detailed documentation and analysis.
Why Attorneys Rely on Gerald McDevitt

Decades of reconstruction and courtroom experience

Qualified and accepted in state, federal, and military courts

Scientifically supported, documented opinions

Clear communication of complex technical findings

Gerald McDevitt personally performs all reconstruction analysis and opinions.
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.
