From creative strategy and innovation to digital transformation and operational efficiency, Sentinel Advisory Solutions provides executive-level services that stand out, perform, and inspire across multiple sectors. Let us help you turn your vision into measurable success.
While building, leading, and advising highly successful organizations across the public and private sector for more than 30 years, our founder learned early on that senior leaders rarely succeed alone. Innovation, entrepreneurship, transformation, stakeholder engagement, and mission success are most often team sports.
Central to that team effort are those subject matter experts who — through specialized training, deep experience, and diverse viewpoints — equip senior leaders with the perspectives necessary to embrace new ideas, leverage best practices, prioritize resources, and identify and mitigate threats well left of bang.
We call them sentinels.
It is no coincidence that, in the US military, the sentinel name applies to a wide range of mission sets and weapon systems — warfighters standing watch in a guard tower at the battle edge, AN/GSQ-272 intelligence analysts targeting threats, RQ-170 operators providing actionable intelligence to battlefield commanders, Army cyber operators evaluating risk to mission, and LGM-35A missileers guarding our nuclear perimeter. Regardless of rank, role, or mission responsibilities, these sentinels all have one thing in common: they provide leaders with critical information necessary to understand the battlespace and operational capabilities critical to ensuring decisive advantage.
At Sentinel Advisory Solutions, we seek to blend the creativity of innovation with the precision of battle-tested experience to elevate your organization and achieve mission success. We welcome challenges as opportunities to excel. If we can apply our vigilance to your vision, then let’s chat.
Our Founder
Sentinel’s founder and CEO, Brigadier General Michael Cornell, retired from the Air Force in 2025 after 33 years of service as an intelligence officer and cyber operator. In addition, he brings more than two decades of private sector experience guiding entrepreneurs, corporate boardrooms, and C-Suite executives in charting prescient strategic visions, optimizing organizational efficiencies, and managing all forms of risk to achieve desired operational objectives and business outcomes. He practiced law for Fortune 500 clients, served as a director and trustee to non-profit organizations, and is a successful serial seed investor in multiple technology startups. He is a 7-time finisher of the Boston Marathon and a recent finisher of the Marine Corps Marathon.
Mike brings to his clients a passion for building winning teams, leveraging new technologies, and empowering teammates to achieve success. His passion was forged through his creation of three cyber, information technology (IT), and ISR organizations and his stewardship of another two through challenging but highly effective mergers, while simultaneously leading each of them to achieve a string of national-level operational firsts. In the largest of these endeavors, Mike leaned into stakeholder engagement and employee innovation to develop a transformational business model that eliminated a $30 million annual budget shortfall and recovered $229 million in reimbursable costs for a fee-for- service enterprise that provides data, voice, and video to over 100,000 customers at more than 800 sites in over a dozen countries.
Mike’s final military assignment was as the senior uniformed officer at the Pentagon for the Defense Information Systems Agency (DISA), where he led an agency of 4,000 uniformed, civilian, and contractor personnel in operating and defending a $14B IT and cybersecurity infrastructure that secures key Department of War (DoW) cyber terrain and provides uninterrupted communications capabilities to 500,000 warfighters across 10 enclaves in 850 locations worldwide. Upon his retirement, the Secretary of War awarded him the Defense Superior Service Medal for his leadership of bespoke network capabilities that enable the President, Secretary of War, Joint Chiefs of Staff, National Military Command Center, Intelligence Community, and other National Leadership to execute essential functions in all environments, regardless of time or location.
