Physical Security Expert Witnesses

Physical security expert witnesses and consultants listed here may be able to form expert opinions, draft expert witness reports, provide expert witness testimony at deposition and/or trial as or serve as consulting (non-testifying) experts on physical security. The physical security expert witness listings on this page are typically from fields/areas of expertise such as: Fire, Jails & Prisons, and Security.

Jeffrey D. Zwirn, CPP, CFPS, CFE, SET, FASI&T, CHPA-IV, MBAT IDS Research & Development, Incorporated

Tenafly, New Jersey
Security, Fire - Burglar Alarm, Alarm System, Security System, Alarm & Security, Central Station, Telephone Line Security, Fire Alarm, Smoke Detection, Carbon Monoxide, Panic & Holdup, Physical Security, Access Control, Video Surveillance Systems, Manufacturer Specifications, UL & NFPA Standards, Industry Standards.
A Master Alarm Technician, Certified Protection Professional (CPP), Board Certified in Security Management, Certified Fire Protection Specialist (CFPS), Certified Fraud Examiner (CFE), Senior Engineering Technician, Level IV Certified (SET) in Fire Protection Engineering Technology/Fire Alarm Systems, Certificate Number 111275 from NICET, Level I and II Certified Engineering Technician, Fire Protection Engineering Technology/Inspection and Testing of Fire Alarm Systems (FASI&T) from NICET, Certified Homeland Security Protection Associate Level IV (CHPA-IV)by The National Sheriffs’ Association in partnership with The Global Society of Homeland and National Security Professionals. Appointed and Serves on twenty-two (UL) Underwriters Laboratories, Inc. Standard Technical Panels (STP) and is a former Principal Technical Committee Panel Member, Appointed by NFPA 72®, in the Special Expert Category, for The National Fire Alarm Code And The National Fire Alarm and Signaling Code. As an ac...

Marcello R. Kettrles, PSP, CPD, CCE Preventive Security Assessment Services, LLC

New York, New York
Jails & Prisons, Security - Correction Officer Policies & Procedures, Premises Liability, Use of Force, Crime Prevention Through Environmental Design, Standards of Care, Security, Security Management, Conditions of Confinement, Physical Security, Security Guard Negligence, Jail & Prison Practices, Negligent Security
Marcello is the founder of Preventive Security Assessment Services, LLC in New York City; a firm specializing in consulting, physical security and security training. He founded Preventive Security Assessment Services in 2021 following a long and successful law enforcement and security operations career that spanned over 30 years. Marcello was employed by the New York City Department of Corrections (NYCDOC) for over 20 years, retiring in good standing as a frontline Corrections Officer on Rikers Island in July 2011. During his tenure, he was responsible for managing risk in jail settings. His responsibilities included, preventing and managing hazards with conditions of confinement, search and seizure protocols, inmate classification / threat assessments, inmate safety, suicide prevention, exterior perimeters, video surveillance, access control, gathering and sharing intel, report writing, security assessments of physical jails and jail connected facilities. His work with the NYCDO...