Services - Forensics Guy Inc.

With over 900 trial appearances and two decades of forensic science expertise, Forensics Guy Inc. delivers scientifically grounded, courtroom-ready consulting in dram shop, forensic toxicology, firearms identification (ballistics), and case strategy development. We support criminal defense attorneys, civil litigators, law enforcement, prosecutors, and academic institutions throughout Arizona and nationally.

Dram Shop Toxicology

Forensics Guy Inc. provides specialized expert services in dram shop litigation, focusing on the scientific evaluation of alcohol service, impairment, and causation. These cases often hinge on reconstructing drinking behavior and evaluating whether and individual exhibited obvious signs of intoxication at the time of alcohol service – critical elements under Arizona’s Dram Shop statues (A.R.S. § 4-311, § 4-312) and similar in other jurisdictions.

Retrograde Extrapolation:

Retrograde Extrapolation: the back estimation of blood alcohol concentration based on a known alcohol concentration at a later point in time.

Medico-Legal Alcohol Calculations:

Dose calculations based on gender, body weight, drink volume, and alcohol concentration.

Signs and Symptoms of Alcohol Impairment and Intoxication:

Description of expected signs and symptoms of alcohol ingestion based on known or calculated blood alcohol concentrations, review of witness statements and surveillance footage to describe signs and symptoms of alcohol ingestion.

Litigation Support:

Preparation of reports and affidavits, depositions and trial testimony.

DUI Toxicology Alcohol & Drug

Similar to Dram Shop toxicology, Forensics Guy Inc. also has extensive knowledge and experience with NHTSA’s standardized field sobriety testing (SFSTs) and Drug Recognition Expert (DRE) evaluations, and has routinely testified about what tests like horizontal gaze nystagmus, walk and turn, one leg stand, and other non-standardized roadside tests actually mean.

Firearms Identification & Shooting Incident Reconstruction

Forensics Guy Inc. offers expert firearms examination and reconstruction services for criminal defense, civil litigation, and post-conviction case review. Drawing on extensive experience and court-qualified expertise, this service supports the accurate analysis of firearms-related evidence through rigorous, scientifically validated methodologies.

Firearms Function Testing:

Mechanical inspection and operational testing firearms, determination of trigger pull weight, safety mechanisms, potential for accidental discharge, verification of semi-automatic vs. fully automatic function.

Bullet and Cartridge Case Comparison:

Microscopic comparison of bullets and cartridge cases to determine if they were fired from a questioned firearm, or from the same firearms which wasn’t found, evaluation of class and individual characteristics to determine potential source, all using the current AFTE Theory of Identification and scientifically appropriate protocols.

Shooting Incident Reconstruction:

Ejection pattern analysis to estimate shooter position or movement in dynamic scenes, muzzle-to-target distance determination using gunshot residue and powder deposits on both clothing and skin, bullet trajectory analysis using trajectory rods/lasers and evaluating autopsy reports.