Amid global conflicts and the rise of China, national security has become central to US economic and industrial strategy. Former Defense Secretary Mark Esper advocates for increased defense spending and better utilization of cutting-edge weapons from tech hubs like Silicon Valley, Austin, and Boston. The space sector presents a significant opportunity, with companies like Apex Space industrializing satellite production and the US exploring ambitious projects such as Golden Dome. However, the new defense-tech boom faces challenges including Pentagon procurement speed, startup production scalability, and the technical and financial feasibility of space-based missile defense.