The Air Force Research Laboratory modified Castelion's contract to begin Blackbeard integration on the F-16. The startup disclosed no value, schedule or Air Force purchase plan.
A 21-day Pentagon ultimatum and the Aug. 31 Patriot/THAAD framework deals reveal the real constraint is funded orders and sub-tier suppliers, not factory space, opening room for a purpose-built entrant like Castelion.
Castelion's $1 billion Series C at a $13 billion valuation puts private money behind a Pentagon production plan that still depends on successful tests, a procurement contract and Congress.
A startup founded in 2022 just moved a low-cost hypersonic out of flight testing and toward fielding, the attritable-mass model the Pentagon now wants for deterrence.