Marcello R. Kettrles, PSP, CPD, CCE Expert Witness
Curriculum Vitae

Contact this Expert Witness

  • Company: Preventive Security Assessment Services, LLC
  • Phone: (646) 725 3841

Specialties & Experience of this Expert Witness

General Specialties:

Jails & Prisons and Security

Keywords/Search Terms:

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

Years in Practice:


Number of Times Deposed/Testified in Last 4 Yrs:


Additional Information

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 NYCDOC often involved proactively identifying, investigating, and mitigating threats to the life and safety of thousands of pre-trial detainees in custody. Marcello was responsible for safeguarding medical staff, vendors, visitors, contractors, clergy, special groups, attorneys, educators, visiting law enforcement, investigators and others while confined to a prison atmosphere. Marcello is Board-Certified in Physical Security, having earned the Physical Security Professional (PSP) certification through ASIS International. The PSP demonstrates one’s knowledge and competency in three key domains of security. Physical Security Assessment/ Application, Design, and Integration of Physical Security Systems / Implementation of Physical Security Measures. Marcello has earned the National Institute of Crime Prevention (NICP) Crime Prevention Through Environmental Design Professional Designation Certification (CPD). This certification suggests he is an expert in CPTED principles, skills, and the applications essential for creating a safer, healthier, and more sustainable human environment. Marcello is a Certified Corrections Executive (CCE) through the American Correctional Association (ACA). This certification signifies he can successfully develop and implement policies and procedures for Adult Correctional Institutions on the Federal, State and Local levels. Marcello is certified as a Work Place Violence Prevention & Intervention and Active Assailant Instructor with the Center for Personal Protection & Safety (CPPS). Areas of Expertise: • Adult Correctional Practices • Premises Liability • Negligent Security Professional Memberships 2024: American Bar Association (ABA) Greater New York Chamber of Commerce International Foundation of Protection Officers (IFPO) American Correctional Association (ACA) American Society for Industrial Security (ASIS International) The United States Crime Prevention Through Environmental Design (CPTED) Association. American Jail Association (AJA) NYPD Shield, New York City Police Department Character References: Dr. Daniel B. Kennedy Ph.D., CPP Forensic Criminology Associates, Inc. (248) 709-1166 [email protected] Dr. Michael Salitore Ed.D. Salitore Professional Services, LLC (971) 678-0820 [email protected] Charlie Ahmad, CPP Group Nine Risk Consulting (303) 909-0130 [email protected]