Sentinel Risk Group helps leaders identify operational risk, strengthen organizational resilience, and make better decisions before disruption becomes failure.
Every engagement is structured, operator-informed, and built around your organization's actual risk exposure — not a generic checklist. We assess. We advise. We equip you to act.
A complete SORI™ readiness assessment across all 10 SRG Operational Readiness Pillars™. Produces a weighted organizational score, pillar-level breakdown, maturity tier assignment, and an executive findings summary your leadership team can act on.
A structured advisory session with a Sentinel Risk Group practitioner. Live interpretation of your assessment findings, priority risk walkthrough, and a Mitigation Roadmap delivered directly to your leadership team.
An integrated assessment and advisory engagement. Full organizational picture, executive briefing, and a structured implementation program — delivered by a Sentinel Risk Group operator with the depth your organization requires.
The Sentinel Operational Readiness Platform (SORP) is the proprietary assessment engine that powers every SRG engagement — delivering structured, repeatable, operator-grade readiness intelligence.
"SORP doesn't guess at risk. It measures it — across 10 operational domains — and delivers a scored, tiered, actionable intelligence product your leadership can use immediately."
Sentinel Risk Group works with corporate, government, and select individual executive clients responsible for operational continuity, organizational resilience, and risk-informed decision-making.
Organizations with operational complexity, physical infrastructure, personnel risk, and continuity requirements. From mid-market firms to enterprise operations.
Public sector agencies, municipalities, and government contractors requiring structured readiness assessment and operational risk visibility at the leadership level.
Select high-profile individual clients — C-suite executives, public figures, and senior leaders — requiring personal operational security assessment and advisory.
These values are not aspirational. They are operational standards — rooted in the Special Forces ethos and expressed in every engagement Sentinel Risk Group undertakes.
The client's problem is the mission. We do not leave until it is solved. We measure success by what changes in your risk environment — not by the weight of our report. We will never recommend a service you do not need.
We tell you what we found. All of it. Our findings are independent, honest, and ours alone. We will never shade an assessment to protect a relationship or win the next engagement. Comfort is not our product.
We do not market through noise. We earn trust through execution. Your business is confidential. We will never reference your engagement without written authorization. Results speak. Credentials follow.
Complexity is expected. We are trained for it. Every engagement receives our full effort from start to finish. We do not deliver incomplete work. We do not walk away when it gets hard. Mission success is not optional.
No two clients face the same threat environment. We build every assessment from scratch — around your actual reality, not a recycled framework. The threat landscape evolves. So do we. Templates are starting points, not deliverables.
The most sophisticated technical assessment fails if it ignores human behavior. We study the people, not just the systems. We build trust before we assess. We listen before we advise. People are always the primary variable.
Sentinel Risk Group exists to identify vulnerability before crisis, translate risk into decisive action, and deliver operationally grounded advisory that protects what matters most — for clients who cannot afford to be wrong.
To become the most trusted name in boutique risk advisory for organizations operating in complex, high-stakes environments — recognized not for our size, but for the integrity of our work and the outcomes we deliver.
Mark Apperson is a transitioning Special Forces senior leader with more than 24 years of military experience in high-risk operational environments, strategic planning, organizational leadership, and mission execution.
His background includes Special Operations leadership, operational risk management, cross-functional team development, contracting coordination, training oversight, and readiness assessment across complex environments.
Through Sentinel Risk Group, he brings a disciplined, operator-informed approach to helping organizations assess risk, improve resilience, and build decision advantage before disruption occurs.
SRG is not a security guard company. It is not a cybersecurity vendor. It is an operational resilience and readiness advisory firm — built by an operator, structured for leaders, and delivered with the discipline that high-stakes environments demand.
Sentinel Risk Group is based in North Carolina and supports clients across the Southeast and nationally through remote, hybrid, and on-site engagements.
Every engagement begins with a conversation. Tell us about your organization and we'll respond within one business day.
Start with the free SRG Rapid Assessment. No commitment, no sales call — just a 10-question readiness indicator that tells you where your gaps are.
Take the Rapid Assessment →