The Iran war is redefining modern combat for the U.S. and driving demand for lower-cost tech. It's the exact situation Defense Secretary Pete Hegseth warned against a few months ago. "We cannot afford to shoot down cheap drones with $2 million missiles," Hegseth said in December. "And we ourselves must be able to field large quantities of capable attack drones." Two days into the war, the U.S. used up a reported $5.6 billion in munitions. Meanwhile, Iran has wreaked havoc on military bases,