When the headlines scream about trillion-dollar defense budgets vanishing into black holes, it’s a rare jolt to see the Pentagon back a project that actually delivers firepower without draining the taxpayer’s wallet dry. Enter Castelion, [https://www.castelion.com/], the scrappy California-based defense outfit that’s just locked in contracts to bolt its Blackbeard hypersonic missile onto Army and Navy gear—real platforms, not pie-in-the-sky prototypes. Announced yesterday, this deal is a straight shot at fielding weapons that can outpace threats from Beijing to Moscow, all while keeping costs grounded in reality. Castelion, barely three years old and holed up in Torrance with outposts in...