Castelion, a defense startup founded by former SpaceX engineers, is racing to mass-produce a hypersonic strike weapon called Blackbeard to restore American deterrence. Company leaders say the U.S. military’s demand is unprecedented and urgent, and they promise rapid development, high-tempo testing, and industrial-scale manufacturing to outpace adversary systems. Their approach borrows SpaceX-style integration and iteration while aligning with Republican priorities on military strength and deterrence. The story explains how Blackbeard aims to combine affordability, production volume, and technological speed to give the U.S. a decisive advantage.
El Segundo, CA-based Castelion says the battlefield reality—like Russia’s hypersonic strikes on infrastructure in western Ukraine—is accelerating U.S. requirements. Senior executives describe demand for Blackbeard as unprecedented and stress that the nation needs mass-produced, superior systems to reestablish deterrence. The company frames its mission as replacing parity with overwhelming capability so adversaries simply will not test American resolve.
Co-Founder Andrew Kreitz emphasizes that Blackbeard is a clean-sheet design built by engineers with SpaceX backgrounds, and that the company intends to “provide better missiles and faster, in mass.” Castelion claims its playbook focuses on vertical integration of motors and guidance, plus aggressive flight testing to compress development timelines. The team reports more than 25 developmental tests in under 18 months as evidence that this approach can deliver capability quickly.
Castelion also argues that designing for manufacturability is central to cutting costs and accelerating production, estimating potential cost reductions on the order of 10x versus traditional programs. By engineering systems to be produced at commercial scales, the company says it can deliver a U.S. hypersonic option built for mass production rather than a boutique, single-digit system. That difference, they contend, is what will restore deterrence through stockpiles and surge capacity.
The company’s philosophy dovetails with the administration’s focus on deterrence and fast acquisition, a theme leaders have reiterated at public events. Secretary of War Pete Hegseth is quoted as saying, “We’re reestablishing deterrence that’s so absolute and so unquestioned that our enemies will not dare to test us.” Castelion’s leaders say they share that sense of urgency and view production scale as a strategic requirement, not an industrial afterthought.
Kreitz ties the program to a broader strategic posture, saying, “We’re sort of inspired by the Reagan peace through strength mantra. What it means to us is we have to be drastically more militarily capable than our adversaries.” He stresses the practical need for production capacity, arguing that having stockpiles of affordable, reliable hypersonic weapons reduces the chance of major war by removing incentives for aggression. That framing underscores the Republican defense view that capability and readiness prevent conflict.
Company officials point to Russia’s recent operational use of hypersonics—from air-launched Kinzhal weapons to ground-launched Oreshnik strikes—as proof the threat is real and changing the calculus for conventional defenses. Those developments, they say, make affordability, speed, and volume essential for any credible U.S. response. Blackbeard is positioned as a comparative advantage built around those three attributes.
Castelion’s government affairs lead, Cassie Miller, reported direct, high-level interest from the Army and Navy. She told reporters, “The urgency is extraordinary,” and added that customers are openly waiting for Blackbeard. That kind of direct demand, according to the team, validates their strategy of compressing acquisition timelines and prioritizing manufacturability so systems can enter stockpiles instead of remaining prototypes.
The backdrop includes a ramp-up in Pentagon hypersonic budgets during the Trump era, when funding moved from roughly $800 million in 2017 to over $3.4 billion by 2020, and continued emphasis in the current administration. Castelion and similar firms contend that reforms to acquisition and procurement—favoring speed, scalability, and cost-effectiveness—create an environment where innovative small companies can win meaningful contracts. They argue this marketplace approach is necessary to out-produce and out-innovate peer competitors.
For Castelion, the combination of SpaceX-derived engineering culture, high-tempo testing, and an industrial focus aims to deliver a practical hypersonic deterrent rather than another isolated technology demonstration. Executives insist Blackbeard will not merely match what adversaries have used against Ukraine but will “far surpass” those systems when fielded. In their telling, the path to deterrence runs through mass production, rapid iteration, and an unapologetic commitment to military superiority.
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