Silicon Valley’s enthusiasm for superfast weapons has picked up speed, with defense-tech startup Castelion raising $100 million through debt and equity to build hypersonic missile systems. The company is vying to sell long-range strike weapons to the U.

ORLANDO, Fla. — A California-based startup led by former SpaceX executives announced Jan. 29 it has raised $100 million to accelerate development of lower-cost hypersonic missiles, marking Silicon Valley’s latest push into the defense sector traditionally dominated by established contractors.

Castelion, a defense manufacturer developing long-range hypersonic strike weapons, raised a $100 million Series A in a mix of debt and equity.