3. U.S. Iron Dome - Surface to air missiles that hit incoming rockets. See Israel
4. Satellites that shoot down missiles
5. Smaller nuclear warheads
6. Humanoid robot solidgers
7. More naval ships - larger fleet - maybe smaller vessels
8. More and next generation fighter jets - faster, stealth, maybe not human operated
9. US cybersecurity protections
10. US cybersecurity attackers
11. Indestructible tanks - more firepower
12. More advanced military bases around the world
13. Espionage equipment - listening devices etc
14. Space - Shuttles in space, moon station/base
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