Welcome to FIR
Forensic Investigation and Reconstruction
where precision meets truth. Founded by Principle Investigator and Reconstructionist Robert “Bob” Wall, FIR specializes in solving the most complex and forensically intensive investigations.
About FIR
Discover the Expertise Behind Every Investigation
Expertise and Experience
With years of experience and a team of highly skilled professionals, FIR brings unparalleled expertise to every case.
Comprehensive Solutions
From scene investigation to courtroom testimony, FIR offers a full spectrum of services to meet your investigative needs.

Our Services
Our Comprehensive Forensic Services
Cases involving complex investigations can be challenge to piece together. Major crimes usually involve multiple expert opinions, each offering a “piece of the puzzle. A major case entails not only understanding advanced forensic procedures and terminology, but also requires the integration of multiple expert opinions. Forensic Investigation and reconstruction requires the integration of expert opinions along with witness statements and other evidence.
FIR uses cutting-edge technology and methodologies to provide clear, accurate results. Trust FIR to unravel the mysteries and bring clarity to your case.
In cooperation with our partners and colleagues, F.I.R. offers the following services.
- Scene mapping and diagramming utilizing 3D laser scanners, total stations, or Unmanned Aerial Vehicles (drones).
- Imaging and analysis of vehicle event data recorders, infotainment centers, GPS data.
- In partnership with colleagues in DA forensics, FIR can also integrate computer, mobile device, and video forensics into our investigation.
- Review of crime scene, investigative and police procedures.
- Review of forensic reports by other experts previously included in the investigation.


Accident Reconstruction
Whether it's a vehicle collision or an industrial accident, we meticulously analyze every piece of evidence to determine the sequence of events, pinpoint the causes, and provide a detailed understanding of the incident dynamics.
Whether the accident involves a passenger vehicle or a commercial vehicle, we use state of the art procedures and technology to analyze the evidence to determine the sequence of events, pinpoint the causes, and provide a detailed understanding of the incident dynamics.

Crime Reconstruction
A single incident can involve many experts. A shooting or murder incident may involve reports and opinions from crime scene evidence specialists, toxicologists, firearms analysis, blood pattern analysis, and toxicology reports. Each of these fields, and other forensic specialties, have their own protocols, terminology, strengths, and weaknesses. FIR specializes in analyzing expert opinions, interpreting the reports, and explaining the significance of the evidence in terms that are clear and understandable.

Police Procedures Analysis
Virtually every incident begins with a police investigation. Police procedures have commonalities, while individual differences. Having the expertise to know where to find evidence that is, overlooked not fully documented, or misinterpreted, is critical to understanding the dynamics of how an incident or case was handled. FIR can find the undiscovered or overlooked evidence in case investigations.
Why Choose Us
Unmatched Forensic Expertise
When precision and truth matter, FIR excels in forensic investigation and reconstruction. Led by Bob Wall, with over four decades of experience in law enforcement and forensic investigations, our team combines expertise with cutting-edge technology.
Bob’s career includes 28 years as a police officer and investigator, and 15 years as a licensed investigator. During hi police career Bob was a crime scene investigator, accident investigator, and reconstructionist. After retiring, Bob opened his own investigative firm, while continuing to instruct police officers in advanced crime scene techniques and collision analysis at multiple police academies in the DFW area.
Bob has specialized training in crime and crash reconstruction, advanced techniques in crime scene evidence collection, and crime scene photography. His forensic investigation includes advanced coursework in crime scene investigation, crime reconstruction, and blood pattern analysis. Bob has attended advanced training courses in Commercial Vehicle Inspection and Investigation, Event Data Recorder Analysis, advanced forensic mapping techniques, pedestrian and bicycle accident reconstruction, motorcycle accident reconstruction, and speed estimation from damage (Crush) analysis, His full curriculum vitae is available on this website.
Bob is now a full-time faculty member and senior lecturer at the University of North Texas where he teaches courses in Criminal Investigation, Criminalistics, and Crime Scene Investigations. His academic credentials and authorship of textbooks highlight his dedication. As a Senior Lecturer at UNT, Bob continues to educate future professionals.

Latest Work
Showcasing Our Forensic Excellence
Ready to unveil the truth?
Contact FIR today for expert forensic services today!
Contact Us through phone or our email address. Let FIR be your partner in justice.
Our Process
Turning Evidence into Clarity
At FIR, our thorough and meticulous process ensures that every investigation is precise and reliable. Here’s how we do it:
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Evidence Collection and Analysis
We meticulously gather and preserve all relevant evidence from the scene, including physical, digital, and testimonial evidence. Our experts analyze each piece to uncover critical details and build a solid foundation for the investigation.
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Reconstruction and Simulation
Using the gathered evidence, we reconstruct the sequence of events through detailed simulations and models. Advanced software tools and forensic methodologies create an accurate representation of the incident, helping us understand what truly happened.
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Reporting and Testimony
Our findings are compiled into comprehensive reports that are clear, concise, and admissible in court. We provide expert testimony to support our conclusions, ensuring the truth is effectively communicated in legal proceedings.


Client Testimonials
Hear From Those We've Helped
Legal Counsel
"FIR's meticulous accident reconstruction played a pivotal role in our case. Bob Wall's expertise and detailed report provided the clarity we needed to secure a favorable outcome. FIR's dedication to uncovering the truth is unparalleled."
Insurance Adjuster
"Working with FIR was a game-changer for our investigation. Their thorough analysis and expert testimony helped us resolve a complex claim efficiently. I highly recommend FIR for their professionalism and accuracy."
Legal Counsel
"I've collaborated with FIR on multiple cases, and their forensic reconstruction capabilities are top-notch. Bob Wall's deep knowledge and advanced techniques consistently deliver results that stand up in court. FIR is my go-to for forensic investigations."
Clients Questions
Frequently Asked Questions
Here are some of the most asked questions and answers about forensic investigation and reconstruction:
Forensic investigation is the process of collecting and analyzing evidence from a crime scene. Reconstruction is the process of using that evidence to recreate the events of the crime.
The steps involved in a forensic investigation typically include:
- Securing the crime scene: The first step is to secure the crime scene to prevent contamination of evidence.
- Collecting evidence: The next step is to collect evidence from the crime scene. This may include physical evidence, digital evidence, and witness statements.
- Analyzing evidence: The evidence is then analyzed in a laboratory. This may involve DNA testing, fingerprint analysis, and other forensic techniques.
- Reconstructing the crime: Once the evidence has been analyzed, it can be used to reconstruct the events of the crime.
- Presenting evidence in court: The final step is to present the evidence in court. This may involve testifying as an expert witness.
Forensic investigators have a responsibility to be objective and unbiased in their investigations. They must also be careful to protect the privacy of individuals involved in the case.
There are many different types of forensic investigation, including:
- Criminalistics:The analysis of physical evidence, such as fingerprints, DNA, and ballistics.
- Digital forensics:The analysis of digital evidence, such as computers, cell phones, and other electronic devices.
- Forensic pathology:The investigation of deaths to determine the cause and manner of death.
- Forensic anthropology:The study of human remains to identify the deceased and determine the cause of death.
- Forensic entomology:The study of insects to estimate the time of death.
The qualifications for a forensic investigator vary depending on the specific field. However, most forensic investigators have a bachelor's degree in a science-related field, such as biology, chemistry, or forensic science. Some forensic investigators may also have a master's degree or a Ph.D.
Forensic investigation is not always perfect. There are a number of limitations, including:
- Contamination of evidence: Evidence can be contaminated if it is not collected and handled properly.
- Lack of evidence: In some cases, there may not be enough evidence to solve a crime.
- Human error: Forensic investigators are human and can make mistakes.
There are a number of latest advancements in forensic investigation, including:
- DNA testing: DNA testing has become more accurate and efficient in recent years.
- Digital forensics: Digital forensics is a rapidly growing field, as more and more crimes are committed using computers and other electronic devices.
- 3D crime scene reconstruction: 3D crime scene reconstruction can be used to create a virtual model of a crime scene.