Castelion, a defense tech startup founded in 2022, has secured $1 billion in Series C funding at a $13 billion valuation, co-led by Andreessen Horowitz, Carlyle, and JPMorgan Chase. This funding, which includes $800 million in equity and a $250 million credit facility, will be used to mass-produce its Blackbeard hypersonic missiles and other weapons. The company has already garnered over $500 million in U.S. military contracts, aiming to address the Pentagon's need for faster hypersonic weapon procurement.