March 04, 2026

Reclaiming America’s Edge in Hypersonics, Microelectronics, and AI

59 minutes

In this episode of Micro Journeys, host Daniel Marrujo sits down with Dr. Mark Lewis for a sweeping conversation that traces the arc of a career spanning academia, the Pentagon, and now applied national security research. From serving as Chief Scientist of the U.S. Air Force to leading modernization efforts in the Office of the Secretary of Defense, Lewis reflects on the pivotal moments that reshaped his trajectory, including America’s struggle to maintain technological superiority in hypersonics, artificial intelligence, and microelectronics. His journey reveals what happens when innovation stalls, competitors accelerate, and leadership must step in to reset the course.

At the heart of the discussion is a sobering reality: the United States pioneered many of the technologies now reshaping modern warfare, from hypersonics to AI, yet allowed its edge to erode. Lewis details how underinvestment, aging test infrastructure, outdated microelectronics strategies, and manufacturing complacency created gaps that peer competitors exploited. He unpacks the internal cultural, structural, and technical challenges inside the Department of Defense, from bridging operators and technologists to confronting the limits of “trusted foundry” models and the hype surrounding artificial intelligence.

The solution, Lewis argues, lies in disciplined reinvestment: rebuilding test infrastructure, returning to the commercial technology curve, modernizing manufacturing, and empowering leaders who make their teams successful. Technological dominance is not inherited, it is sustained through deliberate action.

What You’ll Discover in This Episode

(01:00) — Why Mark Lewis once planned to “lecture until I died at the podium”, and what changed his path forever.

(13:46) — The moment he realized the United States had fallen behind China and Russia in hypersonics.

(24:20) — The Alpha Dog Trials; when an AI pilot defeated a human pilot, and what it revealed about self-preservation and machine learning.

(46:18) — How America’s “trusted foundry” model unintentionally pushed defense microelectronics generations behind commercial technology.

(55:13) — Why Purdue’s Applied Research Institute is focused on hypersonics, microelectronics, infrastructure, nuclear power, and energetic materials, and how applied research bridges the Valley of Death.

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