J.C. Lintzenich
J.C. Lintzenich
A senior national security expert with more than three decades of experience across the Intelligence Community, Department of Defense, NATO, and U.S. Senate. J.C. has served as a Senior Advisor to the Director of National Intelligence, National Security Advisor to a senior U.S. Senator, and Defense Policy Director in the Office of the Secretary of Defense. He is a retired U.S. Army Military Intelligence Officer with a career that included service in elite military organizations and complex global operational environments. He currently serves as a Visiting Senior Fellow at the German Marshall Fund of the United States and holds board and advisory roles reflecting continued engagement with senior leaders across government, industry, and educational institutions. He has supported national-level decision-making, engaged extensively with allied governments and international partners, and worked at the intersection of policy, operations, and strategy in high-consequence environments. That experience informs how he advises clients today—focused on clarity, judgment, and action when the stakes are real.
A clear understanding of how decisions are actually made across government and institutions
The ability to translate between public sector, private sector, and international environments
Judgment grounded in real-world experience, not theoretical analysis
Insight into how timing, positioning, and incentives shape outcomes
I work directly with clients in a focused, professional, and collaborative model.
Engagements are designed to provide clear, actionable insight—not academic analysis. Clarity when timing matters, discretion in sensitive environments, and alignment before execution.
I operate as a trusted advisor, integrating where needed with leadership teams, not as an external layer of process.
Lintzenich Advisory reflects how I have operated throughout my career—focused on clarity, disciplined thinking, and helping make informed decisions in complex environments.