Alarm Over Hypersonic Missile Gap Fuels Startup Boom
5 December 2025 With $350 million in new funding, Castelion is among the companies racing to make the U.S. competitive with Russia and China in Mach 5 warfare
5 December 2025 With $350 million in new funding, Castelion is among the companies racing to make the U.S. competitive with Russia and China in Mach 5 warfare