In 2023, Raytheon’s president stood at the Paris Air Show and described what it took to restart Stinger missile production. They brought back engineers in their 70s to teach younger workers how to build a missile from paper schematics drawn during the Carter administration. Test equipment had been sitting in warehouses for years. The nose cone still had to be attached by hand, exactly as it was forty years ago.The Pentagon hadn’t bought a new Stinger in twenty years. Then Russia invaded Ukraine,...