Silicon Valley disruptors and defense industry heavyweights are locked in a fight to shape the future of drone warfare. The competition pits agile startups like Performance Drone Works and Anduril against the big primes — large, traditional defense contractors like Lockheed Martin, Boeing, and General Atomics — to build new and emerging classes of weapons seen as essential for future war. Billions of dollars are at stake in this battle. The Pentagon is preparing to spend $9.4 billion on aerial