Expert Witness Support

Portrait of a man in formal attire, wearing glasses and a tie, standing against a plain wall, conveying professionalism and poise.
Certificate of completion for Marcello R. Kettles, acknowledging participation in the SEAK course on building a successful expert witness practice.

A Message From Our Principal

With over three decades of experience in Law Enforcement and Security Operations, I bring a rare and highly specialized perspective to litigation support involving Adult Corrections, Jails, Prisons, Conditions of Confinement, and Negligent Physical Security practices. As a retired New York City Department of Corrections Officer, I have transitioned into a career as an Expert Witness—an uncommon path that sets me apart in this field. “One of the Few—Perhaps the Sole—former Rikers Island Correction Officers providing Expert Witness support in the United States.“

Marcello R. Kettrles CPP, PSP, CPD, CCE

Expert Witness Testimony

When a case goes to court, jurors require detailed, factual information about the events that occurred. While evidence can provide some degree of insight, questions are often left unanswered; especially if there was a lack of key witnesses at the scene.

Business team meeting in a modern conference room, discussing documents and strategies. A clock and projector are visible, emphasizing a professional setting.

Litigation Support:

  • Adult Correction Practices
    Conditions of Confinement
    Use of Force
    Policies and Procedures
  • Premises Liability
    Restaurants & Bars
    Apartment Complexes
    Gas Stations
  • Negligent Security
    Standards of Practice
    Inadequate Security
    Policies and Procedures

Service Offerings:

  • Expert Testimony
  • Expert Witness Reports
  • Response to Opposition Statements
  • Documentation Analysis

Professionally Educated By SEAK Expert Witness Training Company To Provide Litigation Support Services.

Certificate of completion for Marcello R. Kettles, awarded by SEAK, Inc. for participation in an expert witness training course in Naples, Florida.

Physical Security Risk Assessment Asset Protection

Crime Prevention Through Environmental Design (CPTED) Strategies​

PSASLLC is committed to provide organizations with a comprehensive and sustained security program to protect and safeguard its employees, resources, and facilities. A fundamental component of this program involves conducting qualitative physical security risk assessments. This document will also describe the methodologies used to complete the risk assessment, characterizes existing physical security measures, and assess risks based on identified vulnerabilities, threats, and consequences utilizing the latest industry trends and best practices.

  • Asset Protection and Resilience Development
  • Policy and Procedure Development
  • Security Vulnerability Assessment
  • Insider Threat Intervention
  • Crisis Management and Communications
A judge in a black robe gestures while seated at a courtroom bench, with a U.S. flag and emblem behind her. The image illustrates courtroom proceedings.
Certificate of Participation awarded to Marcello R. Kettles for completing the Zoom course "How to Write a Bulletproof Expert Witness Report" on May 30-31, 2024.

Call today for professional security consulting services that offer workable solutions for just about any high-pressure situation.