Advanced technical training
Our team’s training includes programs from PenLink, LexisNexis, ZETX, the FBI’s Cellular Analysis Survey Team (CAST), NW3C, Berla, Forensic Analytics, and NDCAC.
Our experts
The people behind
the precision.
Led by principals Derek Machens and Brian Meadows, Precision Analytics brings together analysts with extensive experience in major criminal investigations, detailed historical analysis, and presentations for court proceedings.
Our team
Experience earned
in complex cases.
Our team combines more than 50 years of law enforcement experience with 600+ hours of advanced cellular and geolocation training.
Across their careers, our analysts have worked hundreds of major criminal cases. Their experience spans homicide, robbery, carjacking, kidnapping, and murder-for-hire investigations, as well as complex organized crime and federal RICO cases.
We bring that investigative perspective to the detailed historical analysis and courtroom preparation we provide for prosecutors. Our analysts examine cellular and geolocation records, assess patterns of life, and bring timelines, communications, and other evidence together in clear, synchronized presentations.
Our analysts have prepared evidence presentations that have helped cases resolve through negotiated pleas and have testified as experts in state and federal courts. Prosecutors work with a team that understands how the evidence was developed, how it may be challenged, and how to explain it clearly.
Professional credentials
Our analysts’ backgrounds include criminal justice degrees, state and federal awards, and service as federally deputized Task Force Officers. Brian Meadows’s credentials include Berla CVST and CVSE certifications and development of a Missouri POST-approved course on open-source and social media investigations.
Operational experience
Our team’s field experience includes cellular and vehicle location work in fugitive, missing-person, and violent crime investigations.
Derek Machens and Brian Meadows lead the firm, with additional analysts available for casework as needed. The assigned expert and relevant qualifications are confirmed for each engagement.
Investigative experience,
from records to testimony.
Derek has specialized in cellular technology investigations and geolocation analysis since 2015. His work includes cellular records analysis, mapping, synchronized evidence presentations, and expert testimony.
He has completed more than 166 hours of advanced training in cellular networking, radio frequency technology, historical records interpretation, and geolocation analysis. He has been qualified as an expert witness in cellular technology and geolocation analysis in federal and state courts.
Derek is a detective in the St. Louis County Police Department Criminal Intelligence Unit and a federally deputized FBI Violent Crime Task Force Officer. His experience includes hundreds of real-time cellular tracking operations and historical cellular investigations.
Technical experience
- Call detail records
- Historical cell-site information
- Timing advance
- Tower & area dumps
- Geofence returns
- Pen register / trap and trace
He has provided instruction to law enforcement agencies, prosecutors, and juvenile offices on historical cellular records analysis and geolocation investigations. His CV details his training, professional experience, awards, and expert testimony.
Experience across phones, social media, and vehicle evidence.
Brian has worked in cellular technology investigations since 2018 and completed more than 200 hours of specialized training in cellular networking, radio frequency technology, and historical records interpretation. His expert testimony experience includes Missouri state courts and the U.S. District Court for the Eastern District of Missouri.
He has served with the St. Louis County Police Department since 2015 and joined its Criminal Intelligence Unit in 2019. He is a federally deputized FBI Violent Crime Task Force Officer and a designated cellular technology specialist for historical analysis and live tracking.
Brian has used cellular analysis to locate fugitives and missing or endangered children, recover evidence, corroborate alibis, identify unknown suspects, and eliminate potential suspects. His work also draws on social media and IP tracking, along with Berla training and CVST and CVSE certifications in vehicle systems forensics.
His vehicle forensics capabilities include chip-off acquisition: removing and reading memory chips directly when standard methods are insufficient. Available evidence depends on the vehicle system and condition.
Technical experience
- Historical cellular records
- Geolocation & live tracking
- Social media & IP tracking
- Vehicle systems forensics
He created a Missouri POST-approved course on open-source and social media investigations and has taught law enforcement agencies, prosecutors, juvenile offices, and crisis negotiation teams. Brian holds a B.A. in Criminal Justice from Lindenwood University. His CV details his training, instruction, and expert testimony.
Let’s get started
Bring clarity to
your next case.
Tell us what you need to understand.
We’ll define the work, timeline, and budget together.