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Appraisal & Valuation
RT

Roy Theophilus Bent, Jr.

IACP Certified Auto Appraiser / Court Expert Witness / Appraisal Clause UMPIRE

Baytown, Texas25 years+ yrs8.2

Roy Theophilus Bent, Jr., IACP Certified Auto Appraiser, Court Expert Witness, Appraisal Clause UMPIRE is an auto appraisal and valuation expert specializing in diminished value, total loss claims, and stolen vehicles. With a career encompassing extensive experience in accident reconstruction, defective products, and federal lemon laws, he brings a comprehensive framework to litigation work. His work centers on investigating repair negligence, assessing safety recalls, and evaluating whether engines failures have occurred. Mr. Bent has been retained in numerous expert witness and consulting engagements across Texas, involving classic cars, custom vehicles, and heavy trucks. His certifications as a New & Used Passenger Car & Truck Valuation Expert — J.D. Power and Associates / NADA, and as a Texas Licensed Arbitrator & Mediator, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving vehicle market data analysis and insurance appraisal clauses.

Accident ReconstructionDiminished ValueTotal Loss Claims+31
Accident Reconstruction
TA

Tarek A. Omar, D.Sc.

Mechanical and Structural Engineering Leader

McLean, VA30+ years+ yrs8.2

Tarek A. Omar, D.Sc. is a Mechanical and Structural Engineering expert specializing in accident reconstruction and forensic engineering. With a career encompassing mechanical design, structural analysis, and transportation safety, he brings a multidisciplinary approach to complex litigation matters. His work centers on investigating accident causation, assessing vehicle crashworthiness, and evaluating whether safety standards were met. Dr. Omar has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to mechanical engineering, transportation safety, and physical security. His Doctorate of Science in Mechanical Engineering from George Washington University, along with his extensive experience in Finite Element Analysis (FEA) and forensic engineering, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving vehicle dynamics, crashworthiness, and structural integrity.

Mechanical EngineeringMechanical DesignStructural Analysis+6
Architecture
JR

John Richard Medina

Construction Defects Expert Witness

Miami, FL40+ years+ yrs8.2

John Richard Medina is a construction defects expert specializing in architectural consulting and forensic analysis. With a career spanning architecture, construction consulting, and forensic architecture, he brings a comprehensive perspective to litigation work involving building envelope and code compliance issues. His work centers on investigating construction defects, assessing building code compliance, and evaluating whether industry standards have been met. Mr. Medina has been retained in numerous expert witness and consulting engagements across the United States, involving high-rise residential and commercial buildings, as well as complex construction projects. His Master in Architecture in Environmental Technology Option, along with DPR Certification — Louisiana and NCARB certificates in 10 states, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving exterior wall cladding, glazing, and waterproofing systems.

Construction DefectsConstruction Consulting
Accident Reconstruction
BT

Bradley T Cook, PE, MSE, CXLT

Expert Witness

Sarasota, FL24 years+ yrs8.2

Bradley T Cook, PE, MSE, CXLT is an accident reconstruction and biomedical engineering expert specializing in auto accident and collision analysis litigation. With a career encompassing accident reconstruction, crash data retrieval, and human factors analysis, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating accident causation, assessing human factors in crash scenarios, and evaluating whether safety standards were met in product liability cases. Mr. Cook has been retained in numerous expert witness and consulting engagements across Michigan and Florida, involving auto accidents, premises liability, and product liability cases. His Master of Science in Biomedical Engineering, along with his Licensed Professional Engineer (PE) credentials in Michigan and Florida, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving accident reconstruction and safety compliance.

Biomedical Engineering
Police practices
DR

Dr. Ron Martinelli

Forensic Criminologist, Police/Corrections Expert, Certified Medical Investigator

Boerne, TX8.2

Dr. Ron Martinelli, Ph.D., MPA/JA, Certified Medical Investigator, CMI-V is a forensic criminologist expert specializing in police practices and corrections litigation. With a career encompassing forensic psychology, public and justice administration, and extensive field investigations, he brings a multidisciplinary perspective to his litigation work. His work centers on investigating police practices, assessing corrections protocols, and evaluating whether security assessments meet industry standards. Dr. Martinelli has been retained in over 500 expert witness and consulting engagements across the United States, involving cases such as deadly/excessive force, jail suicides, and inadequate security. His Ph.D. in Criminology, with an emphasis in Forensic Psychology, along with certifications such as Certified Medical Investigator, CMI-V, and Certified Litigation Specialist - Police Practices & Corrections, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving police practices and corrections.

CorrectionsSecurity assessmentIncident reconstruction+2
Architecture
MA

Marcus A. Marino

Expert Witness – Architecture & Construction Consulting

Davis, California45+ years+ yrs8.2

Marcus A. Marino, AIA, NCARB is an architecture and construction consulting expert specializing in forensic analysis and litigation support. With a career spanning architectural design, zoning disputes, and construction defect analysis, he brings a comprehensive framework to evaluating architectural standard of care and duty to warn in complex cases. His work centers on investigating construction defects, assessing compliance with building codes, and evaluating whether professional practice standards were met. Mr. Marino has been retained in numerous expert witness and consulting engagements across the United States, involving architectural design, zoning and property disputes, construction defects, and professional liability. His Master in Science of Architecture and Urban Design from Columbia University, along with his Certificate Holder status with the National Council of Architectural Accreditation Boards, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of standard of care in disputes involving architectural design and construction practices.

Construction DefectsArchitectural Standard of CareBuilding Codes & Compliance+3
Construction Defects
MC

Michael C Head, PE

Structural Engineer - Construction and Personal Injury

Atlanta, Georgia40+ years+ yrs8.1

Michael C Head, PE is a structural engineering expert specializing in construction defects and personal injury litigation. With a career spanning over four decades in building construction, building forensics, and high-rise building construction analysis, he brings a comprehensive framework to litigation work. His work centers on investigating construction defects, assessing structural integrity, and evaluating whether construction standards were met. Mr. Head has been retained in numerous expert witness and consulting engagements across the Southeastern United States, involving construction defects, structural failures, and hurricane damage cases. His MS in Structural Engineering from Vanderbilt University, along with certifications as a Professional Engineer in multiple states and a LEED© Accredited Professional (LEED AP BD+C), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving structural engineering and construction practices.

Structural Engineering
Construction Defects
BR

Brice R. Miller

Expert Witness

Gainesville, FL24 years+ yrs8.1

Brice R. Miller, MBC, BSBC is a construction defects expert specializing in moisture intrusion, stucco, and building envelope litigation. With a career spanning construction project management, quality control, and forensic investigation, he brings a comprehensive understanding of building codes and construction standards to his litigation work. His work centers on investigating construction defects, assessing compliance with building codes, and evaluating whether industry standards have been met. Mr. Miller has been retained in numerous expert witness and consulting engagements across Florida, involving construction defect claims, building envelope failures, and compliance with FL Statutes 558 and 553. His Master of Building Construction from the University of Florida, along with certifications such as LEED Accredited Professional and FenestrationMasterTM, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving construction defects and building code compliance.

Construction
OSHA and Construction
HB

Hendrik Botterman

Corporate Safety Executive

Manhattan, IL45 years+ yrs8.1

Hendrik Botterman, CSP is a construction safety and OSHA compliance expert specializing in liability assessment and contractor duty of care. With a career spanning leadership roles in safety management, policy development, and regulatory compliance, he brings a strategic perspective to litigation work. His work centers on investigating construction site incidents, assessing compliance with safety standards, and evaluating whether safety protocols were adequately implemented. Mr. Botterman has been retained in numerous expert witness and consulting engagements across the United States, involving construction safety, accident investigation, and OSHA compliance cases. His Bachelor of Science in Industrial Technology and Occupational Safety, along with his Certified Safety Professional (CSP) designation, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving construction safety and regulatory compliance.

Liability Assessment & Contractor Duty of CareAccident Investigation & Root CauseAerial Lifts, MEWP+29
Forensic evaluation of design and construction defects
MD

Michael D. Stall, MSCE, PE, DFE, CPAU

Expert Witness

Sugar Land, TX25 years+ yrs8.1

Michael D. Stall, MSCE, PE, DFE, CPAU is a forensic engineering expert specializing in the evaluation of design and construction defects. With a career spanning forensic engineering, disaster recovery, and property insurance loss analysis, he brings a multidisciplinary perspective to litigation work. His work centers on investigating construction defects, assessing schedule delays and cost disputes, and evaluating whether property insurance claims align with industry standards. Mr. Stall has been retained in numerous expert witness and consulting engagements across the United States, involving construction defects, insurance disputes, and disaster recovery cases. His Master of Science in Civil Engineering from Stanford University, along with certifications such as Registered Professional Engineer (Texas #65893) and Senior Forensic Engineer (DFE), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving construction and property loss.

Schedule delay and cost dispute resolutionLitigation support and expert witness testimonyDisaster recovery, repair, and reconstruction+1
Intellectual property
SA

Stephen A. Batzer, Ph.D., P.E.

President, Batzer Engineering, Inc.

Fife Lake, MI40 years+ yrs8.1

Stephen A. Batzer, Ph.D., P.E. is a forensic engineering expert specializing in material failure analysis and accident reconstruction. With a career spanning mechanical engineering, materials science, and intellectual property, he brings a multidisciplinary perspective to litigation work. His work centers on investigating material failure mechanisms, assessing accident causation, and evaluating whether design standards were met. Mr. Batzer has been retained in numerous expert witness and consulting engagements across the United States, involving product liability, patent infringement, and vehicle crashworthiness cases. His Ph.D. in Mechanical Engineering - Engineering Mechanics, along with his Board Certified Forensic Engineer designation, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving mechanical failures and safety standards.

patent infringementforensic engineeringmaterial failure analysis+11
Engineering and Construction
DC

David C. Flettrich, P.E.

Professional Engineer

New Orleans, LA57 years+ yrs8.1

David C. Flettrich, P.E. is a forensic engineering expert specializing in cause and origin investigations related to poorly performing or problematic building systems. With a career spanning the design and retrofit of mechanical, electrical, and control systems, he brings a multi-disciplined perspective to litigation work. His work centers on investigating design errors and omissions, assessing construction defects, and evaluating whether building systems meet industry standards. Mr. Flettrich has been retained in numerous expert witness and consulting engagements across the Southern United States, involving residential, commercial, industrial, and institutional facilities. His Bachelor of Science in Electrical Engineering from Tulane University, along with certifications as a Certified Indoor Environmentalist (CIE) and Certified Microbial Remediator (CMR), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving HVAC systems, moisture intrusion, and energy management.

Forensic engineeringExpert witnessLitigation support+6
Equipment & Machinery
EC

Edward C. Guerra

Independent Crane Operations & Risk Expert

Wexford, PA35 years+ yrs8.1

Edward C. Guerra is a Crane Operations & Risk Expert specializing in equipment and machinery litigation. With a career spanning crane operations, safety management, and lift planning, he brings a comprehensive understanding of industry standards and practices to his litigation work. His work centers on investigating crane accidents, assessing safety management protocols, and evaluating whether standard of care deviations have occurred. Mr. Guerra has been retained in numerous expert witness and consulting engagements across the United States, involving crane accidents, construction safety, and equipment failure cases. His EMT Advanced Certification from Broward College, along with NCCCO Crane Operator Certification, OSHA 30-Hour Construction Safety, and a Commercial Driver’s License (CDL), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving crane operations and safety management.

ConstructionCrane operationsSafety management+2
Accident Reconstruction
BJ

Brian J West

Owner, Lead Crash Reconstructionist

Saint Cloud, FL25 years+ yrs8.1

Brian J West, ACTAR #3065 is an accident reconstruction expert specializing in traffic crash investigations and event data recorder analysis. With a career spanning law enforcement, military police service, and private consulting, he brings a multifaceted perspective to litigation work. His work centers on investigating crash dynamics, assessing vehicular data, and evaluating whether safety protocols were followed. Mr. West has been retained in numerous expert witness and consulting engagements across Florida, involving traffic homicide cases, pedestrian and bicycle crashes, and complex vehicular accidents. His Associates in Science in Criminal Justice Technology, along with his ACTAR Accreditation, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving traffic incidents and crash reconstructions.

Traffic Crash InvestigationsTraffic ManagementDUI Investigations
Real Estate
DD

Dr. Dick Bridy

CEO of DBI Group and Bedrock Investments Group

Solana Beach, CA40+ years+ yrs8.1

Dr. Dick Bridy, MBA, EMBA, PhD is a commercial real estate expert specializing in asset/property management and brokerage litigation. With a career spanning commercial real estate development, brokerage, investment, and leasing, he brings a strategic perspective to litigation involving fiduciary duties and industry standards. His work centers on investigating fiduciary breaches, assessing compliance with real estate standards, and evaluating whether negligence or misrepresentation occurred. Dr. Bridy has been retained in numerous expert witness and consulting engagements across the United States, involving commercial real estate transactions, property management, and development disputes. His PhD in Business, along with his MBA and EMBA, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving commercial real estate management and operations.

Personal InjurySlip Trip & FallReconstruction-Photo/Video+17
Building Inspection
RM

Randal M. Thompson

Public Insurance Adjuster, Registered Appraiser, Property Damage Consultant

Covington, LA18 years+ yrs8.1

Randal M. Thompson, MBA is a property damage and insurance claims expert specializing in damage causation, claims adjusting, and property damage appraisals. With a career encompassing public insurance adjusting, damage consulting, and appraisal services, he brings a multifaceted perspective to litigation work. His work centers on investigating damage causation, assessing claims validity, and evaluating whether insurance policies have been appropriately applied. Mr. Thompson has been retained in numerous expert witness and consulting engagements across both state and federal courts, involving property damage claims, insurance disputes, and liability assessments. His Master of Business Administration, along with certifications such as Legal Principles Claim Specialist and IICRC Certified Technician, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving property damage and insurance claims.

InsuranceClaims Handling & InvestigationsNegotiation Competence+10
Firearm
RK

Richard K. Pumerantz, Ph.D.

Ammo, Firearm, & Shooting Reconstruction Expert

Lake Arrowhead, California8.1

Richard K. Pumerantz, Ph.D. is an Ammo, Firearm, & Shooting Reconstruction Expert specializing in ammunition identification and classification, firearm design and manufacturing, and shooting incident reconstruction. With a career encompassing ammunition design, ballistic trajectory analysis, and toolmark examination, he brings a multifaceted forensic perspective to litigation work. His work centers on investigating cartridge failure, assessing ballistic trajectories, and evaluating whether firearms meet safety and design standards. Mr. Pumerantz has been retained in numerous expert witness and consulting engagements both in the United States and internationally, involving civil and criminal matters related to firearms and ammunition. His Ph.D. in Higher Education, along with certifications such as Crime Scene Investigations and Glock Certified Law Enforcement Armorer, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving firearm and ammunition failures.

AmmunitionBallisticGun+29
Architecture
TM

Tracy Myers, AIA

Expert Witness

Altamonte Springs, FL34 years+ yrs8.1

Tracy Myers, AIA is an architecture and construction defects expert specializing in architectural standard of care and construction defect forensic analysis. With a career spanning building enclosure evaluation, code compliance review, and water intrusion investigation, he brings a comprehensive framework to litigation work. His work centers on investigating construction defects, assessing building code compliance, and evaluating whether architectural standards have been met. Mr. Myers has been retained in hundreds of expert witness and consulting engagements across the United States, involving construction defect and accident litigation. His BA in Architecture from UC Berkeley, along with certifications such as NCARB (#89725), LEED Accredited Professional, and Registered Roof Observer (RRO #1736), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of standard of care in disputes involving architectural and construction defects.

Construction Defects
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