Investigators and Investigations Expert Witnesses and Consultants
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Experts in background investigations, database/DMV searches, surveillance, witness location, Increasingly, modern PIs prefer to be known as "professional investigators" rather than "private investigators" or "private detectives". security, domestic, employee violence and fraud examinations. Investigation experts do not necessarily perform "on-the-ground" investigative services in every state listed.
The listings below are all Investigators and Investigations expert witnesses and consultants.

Expert Listings

Gregory Witte - ACTAR 2340Forensic Crash Specialists
Gregory Witte - ACTAR 2340
Monroe, NY
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29 years of Accident Investigation experience including 20 years of at scene investigations as a police accident investigator. Specializing in Commercial Motor Vehicle Crashes Crash Data Download 3D Diagramming Animations Photogrammetry Motorcycle Crashes Pedestrian Crash. Deploying the latest in technology including aerial photography.

Paul ErricoPaul L. Errico Associates Inc.
Paul Errico
Bridgeport, CT
A professional consultant serving as an expert for not limited to law firms and insurance companies around the U.S. Expertise in OSHA Safety workers comp personal injury HazMat and environmental investigations. Over 35 years understanding challenges facing lawyers pursuant to worker injuries and fatalities on the job. References upon request.

Rob Medlock - Former OSHA Area DirectorSafety Controls Technology, Inc. (SCT)
Rob Medlock - Former OSHA Area Director
Middlesburg Heights, OH
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Before joining Safety Controls Technology in February of 2011, Mr. Medlock served over 33 years in the forefront of occupational safety & health working for the Occupational Safety & Health Administration (OSHA). During his tenure he served in OSHA's Area, Regional, National and State Plan offices completing many assignments critical to the Agency and becoming well respected in the labor and business communities. He is a skilled team builder who believes in the value of providing a safe workplace.

Corbett Investigative Consulting LLCMichael Corbett
Corbett Investigative Consulting LLC
The Woodlands, TX


Robert JohnsonLaw Enforcement Policy And Practices Consultant
Robert Johnson
PALOS HEIGHTS, IL
Robert Johnson is a retired Lieutenant Colonel - Illinois State Police. Johnson continues to serve as a private consultant and expert witness regarding law enforcement policies and practices. He has been retained in over 200 cases and has been qualified in state & federal courts. He also conducts sensitive internal investigations. Johnson currently serves as an Assessor for the C.A.L.E.A. and has reviewed the operations of approximately thirty-five law enforcement agencies nationwide seeking accreditation.


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