Experience - Integrity - Professionalism

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Founder & Principal, Lioncrest Security
Retired Chief of Police, Griffith Police Department

Greg Mance is a retired Chief of Police with more than two decades of law-enforcement leadership and executive-level experience in public safety, investigations, and risk management throughout Northwest Indiana. His career includes command oversight of complex criminal investigations, high-risk operations, emergency response, and the protection of critical infrastructure.

Lioncrest Security operates as a division of Mance Consulting, LLC, a professional services firm founded to deliver security, investigative, and risk-mitigation solutions to corporate, utility, municipal, and legal clients. While Lioncrest Security represents the operational brand, Mance Consulting provides the corporate and compliance foundation that supports the company’s work.

Greg leads all operational, investigative, and security deployments for Lioncrest Security. In this role, he is responsible for client risk assessments, program design, officer selection and supervision, incident response, and operational oversight. His leadership style is defined by professionalism, accountability, and decisive judgment developed through decades of command-level experience.

The company’s business operations are managed by Lynn Mance, majority owner of Mance Consulting, LLC. Lynn oversees the administrative, financial, and compliance aspects of the organization, ensuring Lioncrest Security operates with the structure, documentation, and reliability expected by enterprise-level clients. This division of responsibilities allows Lioncrest to maintain both operational excellence and strong corporate governance.

Greg’s private-sector experience includes designing and managing security programs for major utility providers, engineering and construction firms, industry, municipalities, and legal teams. He has coordinated large-scale security deployments, executive protection details, investigative services, and consulting engagements across Northern Indiana and elsewhere.

Lioncrest Security’s teams are composed primarily of off-duty and retired law-enforcement professionals selected for their experience, discretion, and ability to operate effectively in complex environments. Together, Greg and Lynn have built an organization that blends proven operational leadership with disciplined business management—delivering tailored, compliance-driven security and investigative solutions clients trust.