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20 DECEMBER 2025

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Per Aspera: Who Controls The Air?

Most Americans have no reason to think about the electromagnetic spectrum. It is invisible, silent, and — until something goes wrong — effectively unnoticed. Yet spectrum is the medium that carries everything the country depends on: aircraft navigation, wireless broadband, satellite links, weather radar, GPS, emergency services, and the command-and-control backbone of national defense. Because our airwaves are out of sight, out of mind, few grasp just how finite they really are. That there are hard physical limits. That we live inside them without seeing them, and only notice the walls when we’re about to crash into them. This is the story of how America is losing control of its own atmosphere, and what we can do to win it back.

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Jeff Crusey 12/12/2025 Jeff Crusey 12/12/2025

Castelion Closes $350 Million Series B to Mass Produce U.S. Hypersonic Weapons

Castelion, a cutting-edge defense technology company working to restore America's conventional deterrence capability, announced today it raised $350 million in Series B financing, positioning the company to directly advance a top Pentagon modernization priority: hypersonic munitions production at scale.

Building Long-Range Hypersonic Missiles: A Conversation with Bryon Hargis of Castelion

Castelion is rebuilding deterrence with real hardware and real urgency. This interview with CEO Bryon Hargis is a quick look into the future being built right now.