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 …

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Brian O’Riordan

Director, Mid Atlantic Region

Brian currently serves as the Director, Mid Atlantic Region for P4.  He brings to this position 25 years of experience as a State Police Detective on the Massachusetts State Police.  His current responsibilities include daily oversight and communication with our partner security companies and our clients in New Jersey, Connecticut, Rhode Island and Massachusetts. His …

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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 …

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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 …

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William Bartgen

William Bartgen

Senior Accountant

Bill Bartgen joined the P4 Companies in 2021, with more than 10 years of experience in accounting, financial processes development, and consolidations. In his current role, Bill oversees the day-to-day accounting operations supporting all aspects of the business. His knowledge in building out a process will be used to build P4’s initiatives. Prior to joining …

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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. …

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Chris Curtis

Regional Director

Chris currently serves as Regional Director for P4 Companies.  He brings nearly 23 years of industry experience in key vertical markets such as Automotive, Healthcare, Class A High-Rise, Warehousing/Distribution and Pharmaceuticals.  His current responsibilities include the day-to-day security operations and management of his territory, contract compliance & risk mitigation while working on growth strategies, policy …

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Jeff Kuempel, MBA


Controller and Finance Lead Jeff Kuempel joined the P4 Companies in 2021, with more than 15 years of experience in accounting, financial analysis compliance and risk management. In his current role, Jeff oversees finance, accounting, treasury and revenue management, while playing a significant role in P4’s strategic leadership. His professional experience offers extensive leadership and …

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John Settino

Operations Assistant

P4 Operations Assistant John Settino is responsible for assisting the Operations team with coordinating daily assignments, establishing protocol, sustaining respectable client relationships, and ensuring that an adequate on-call security force is available to cover open posts. John began his career as a Security Officer in 2018 with Securitas Security Services, USA Inc. where he worked …

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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 …

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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 …

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Taylor Toms

Senior Recruitment Specialist

Taylor Toms started her security career 3 years ago as a recruiter for a large international security provider. Taylor successfully implemented strategies to identify talent and successfully place personnel at a number of locations throughout the Chicagoland area. Taylor’s successful execution of these strategies quickly established her as a leading recruiter in the market. In …

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Andrew Bartol

Andrew Bartol

Operations Manager

P4 Security Solutions (P4S) Operations Manager Andrew Bartol joined the P4S team in October 2019 in the unarmed security division and has been instrumental in developing and maintaining client relationships. Bartol additionally implements company best practices, all while managing and supporting P4S’s roster of unarmed security professionals. Additionally, he has been a key provider of …

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Tony Ramos

Senior Consultant of Integration and Technology

Tony Ramos is a Senior Consultant of Integration and Technology at P4 Companies. He specializes in conducting physical security assessments, working with clients in updating or full system designs, developing requests for proposals and vendor selection. Tony is an accomplished security subject matter expert with over 40 years in the private security sector. Previous employers, …

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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 …

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Alven Diaz

Alven Diaz

Scheduling Specialist

Alven is our Scheduling Specialist. He is responsible for the planning and execution of daily schedules to ensure an adequate on-call security force and overseeing staffing needs. He is also committed to advancing the Gold Standard in security solutions and services by maintaining excellent communication and effective relationships. Alven brings a comprehensive set of skills …

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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 …

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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 …

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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 …

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Kevin Conway Headshot


Senior Vice President of Operations

Senior Vice President of Operations Kevin Conway supports all vertical markets as a senior leader within the P4 Security Solutions (P4S) organization and was most recently responsible for the oversight of security operations of over 80 client sites, a majority of which were in the Chicago BOMA market. Kevin provides leadership to the P4S account …