Jeff Tarr Director of Executive Protection

Jeff Tarr

Director of Executive Protection and Vulnerability Assessment

Director of Executive Protection and Vulnerability Assessment Jeff Tarr, brings almost 35 years of federal law enforcement experience. His responsibilities include overseeing the coordination of protection and threat assessments for our clients. During his time as a Senior Special Agent with the U.S. Secret Service, Jeff provided site and security plans for the highest-ranking U.S. […]

Nick Oyervides Headshot

Nick Oyervides

Senior Operations Manager

Nick Oyervides serves as the Senior Operations Manager at P4 Companies, where his responsibilities encompass a diverse range of establishments, including distribution centers, commercial buildings, residential buildings, malls, and more. With over 16 years of experience in the security industry, Nick began his career as an Area Supervisor with G4S Secure Solutions, based in Downtown Chicago. In this role, […]

William Jefferson Headshot

William Jefferson

Senior Operations Manager

William “BJ” Jefferson is a Senior Operations Manager. William comes to us with over 30 years of experience in the security industry. Security is only a portion of the experience he brings with him. He also served in the United States Air Force and US Army Reserves where he obtained a degree in Logistics Management. […]

Kurt Kourakis

Kurt Kourakis

Supervisor of Off Duty/Retired Services

Kurt joined P4 Security Solutions as Supervisor of Off Duty/Retired Services. Kurt recently retired after a distinguished career, spanning more than three decades with the Chicago Police Department and has been defined by a relentless pursuit of justice and security. Throughout Kurt’s tenure, he was assigned to the Bureau of Detectives, where he delved into a […]

Joe Gioulos

Joseph Gioulos

Scheduling Specialist

Joseph Gioulos is a dedicated security professional serving as a Scheduling Specialist at P4 Companies. With a background rooted in customer service, sales, and a commitment to operational excellence, Joe plays a pivotal role in ensuring seamless staffing and coverage across distinct portfolios within the company. Joe began working at P4 in 2021, initially joining […]

Howard Denham

Howard Denham

Field Operations Manager

Howard Denham presently serves as our Field Operations Manager, responsible for leading the Field Supervisor team. His role encompasses conducting compliance audits, overseeing security personnel within designated P4 portfolios, and fostering strong partnerships to unite staff towards common objectives. Howard contributes his expertise in strategic implementation and clear communication to create growth opportunities. With an […]

Shamanda Blue

Shamanda Blue


Shamanda Blue is a Recruiting Professional with over 10 years of recruiting and talent acquisition experience. Currently, she works for P4 as a recruiting professional in the security industry. Shamanda plays a critical role in identifying talent and staffing needs while collaborating with the Human Resources team. Prior to joining P4, Shamanda has worked for […]

Steve Castans

Steve Castans

Director of Client Relations

Steve Castans comes to P4 with over 30 years in law enforcement and 20 years in private security. Steve started his career in law enforcement with Cook County where he attained the rank of Patrolman, Sergeant, Lieutenant, Commander, and Chief of Police for 20 years. He is a graduate of the FBI National Academy, 153 […]

Rick Marty

Rick Marty

Operations Manager of Off-Duty Law Enforcement

Rick Marty is currently the Operations Manager for Off Duty Law Enforcement Officers and an Instructor for P4 Security Solutions.  Rick has 28 years combined experience with the Illinois Department of Corrections (IDOC) and the Illinois Department of Juvenile Justice (IDJJ), with the last 18 years at a Supervisory/ Administrative level.  Rick has always had […]

Mary Valas

Mary Valas

Senior Director of Human Resources

Mary Valas is the Senior Director of Human Resources, joining P4 Companies in 2021. She is a strategic business partner serving as leader, consultant, resource and authority on HR policies, practices, resources, and transactions. She is responsible for developing, implementing, and maintaining HR initiatives that support efficient operations, planning and execution, and maximize individual and […]

Mary Tylus

Mary Tylus

Senior Corporate Trainer

Mary Therese Tylus, M.A. serves as P4 Security’s Senior Corporate Trainer. She brings over 32 years of corporate training experience to her position. She has specialized experience in developing and presenting training programs to security agencies, corporations, and businesses, focusing on security, safety, workplace violence prevention, evacuations and drills, and other critical topics. She has developed […]

Brooke Karraker

Brooke Karraker

Human Resources Generalist

As Human Resources Generalist for P4, Brooke collaborates with many different departments on HR needs. Brooke plays an active role in identifying talent for various Security and Corporate positions while coordinating with Recruitment and Management. She assists with managing employee benefits info, provides employee relations support for Management, and handles other HR duties as needed. […]

Paul Weinman Director of Intelligence

Paul Weinman

Director of Intelligence

Paul Weinman is the Director of Intelligence for P4 Security Solutions, where he brings over 28 years of law enforcement experience. In his current role, Paul is responsible for analyzing crime in areas where P4 Security patrols or plans to patrol, and acts as a liaison with law enforcement agencies. Paul’s extensive background includes serving […]

John Settino_Headshot

John Settino

Operations Manager

John Settino serves as an Operations Manager at P4 Companies, where he plays a pivotal role in overseeing unarmed security operations for a diverse range of establishments, including cannabis dispensaries, cultivation centers, factories, malls, etc. With an educational foundation and over 5 years of security industry experience, John consistently demonstrates his expertise and leadership. John […]

Jacqueline Bily

Security Operations Center Specialist

Jacqueline is a Security Operations Center Specialist for P4. She started in December of 2020. In this position, she monitors security cameras and alarm systems for P4 clients across the country. Jacqueline is a retired 911 dispatcher from a Sheriff’s Office in the suburbs of Chicago. She handled calls for service ranging from cats stuck […]

Joe Doria


As Compliance Manager for P4 Security Solutions, Joe works to help develop and implement compliance and audit procedures for our internal team. Joe works with the Armed and Unarmed Security Officers to update and maintain their credentials as well as required training. He also works with internal and external partners in numerous aspects to ensure […]

Bo Medenica

Senior Instructor

Bo Medenica is a 19+ year veteran of the Chicago Police Department and currently assigned to the Chicago Police Departments’ Training and Education Division (the Academy). He is also a longtime martial artist and security specialist. Mr. Medenica is or has been an Instructor, Coach, Referee, International Competitor, and student, possessing numbers of martial art […]

Melissa Cagle

Director of Administration

Melissa Cagle is a Security Professional with over 20 years of experience both working with security and law enforcement officers. She currently works for P4 Security Solutions (P4S) as Director of Administration. Melissa is instrumental in guides and enforces system policies, oversees the human resource department and much more. Prior to her current role, Melissa […]

Mark Field

Vice President of Consultation Services

Mark Field was appointed Chief of Police in 1996 and retired in November 2016. He served as Deputy Chief of Police from 1991 until 1996 for the Wheaton, IL Police Department. He was a police officer for thirty-nine years and formerly served as Deputy Chief of Administrative Services for the Kankakee County, IL Sheriff’s Police […]

Daniel S Mcdevitt

Senior Vice President of Consultation Services

Daniel S. McDevitt completed a thirty-six year law enforcement career, which began with his appointment as a Special Agent with the Naval Criminal Investigative Service (NCIS). He then served for 24 years with the Illinois State Police (ISP), retiring as a Captain, and subsequently served for ten years as Chief of Police in two Chicago […]