Lux Capital’s Josh Wolfe and others believe the DoD must give up its tight embrace of traditional contractors who lack the agility to develop high-tech defenses against future threats. In the venture capital world, a relatively small group of firms have specialized in funding startups whose tech has applications in defense or intelligence. Lux Capital is one of these firms, and its cofounder Josh Wolfe has built an investment thesis around finding new technologies that could help the U.S. defend itself against threats such as drone swarms or armed satellites.