About Us


Security Professionals

We employ off duty and retired Police Officers, Military Veterans, Security Professionals and Defense Industry Contractors with specialized backgrounds to serve the needs of our clients. We provide the private security essentials that you need to be safe and secure. You can't trust a flight by night company with your interest. If you need security that requires the utmost care and confidentiality, CALL US NOW!


Service Specialties

We specialize in Private Security  for any type of venue, Security Guard Patrols, Parking Enforcement, Celebrity Security, Private Investigations, Executive Protection, Military Strategy, Disaster  Response, Traffic Control Services, Intelligence. We accommodate to our clients needs. Call us now to book security for your private event. 


About Barry Donadio, President of Public Security LLC.

Barry Donadio is a native of New York who has led an honorable career in the Volunteer Ambulance Service, Volunteer Fire Department, the Military, Law Enforcement, and the United States Secret Service. He was assigned to the White House during the Bush and Obama Administrations. He also served in multiple Middle Eastern war zones during his career. In 2013, he authored the book " TWA Flight 800 First Responder Witness Account". This is an account describing his actions during the rescue of TWA Flight 800 on July 17th 1996. In 2014 he was elected to the Queen Anne's County Republican Central Committee in Maryland. He currently serves as President of Public Security LLC, a high end private security and investigation firm licensed in Maryland, New York and the District of Columbia. In January 2017, he was appointed the Sergeant At Arms of the Maryland Republican Party.

Positions Held:


Public Security LLC

June 2013 - Present

 Maryland| New York | War Zones

Special Agent 

United States Government 

Jan 2010 - June 2013

 Virginia | Washington DC | Multiple Middle Eastern War Zones

Emergency Response Team (ERT) Police Officer-Technician

United States Secret Service

Mar 2002 - Jan 2010

 The White House | Bush Ranch | Multiple foreign deployments

Team Leader Emergency Services Team / Investigator

US Air Force Security Police | New York Air National Guard

Feb 1994 - Mar 2002

 Persian Gulf | South America | South Carolina | New York

New York City Special Patrolman | Peace Officer

May 1992 - Jan 1994 

Lefrak Housing, Corona, Queens, New York

Patrolman | Town of Islip

Sept 1989 - May 1992

Islip Township, Suffolk County, New York

Military Police Officer 95B June 1990 - Feb 1994

Infantry Scout 11B Dec 1987 -June 1990

U.S Army Reserve / New York Army National Guard

Queens, New York / Hempstead & Patchogue, New York