17a

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Across
  1. 3. UAV drone
  2. 6. F16 jet
  3. 8. Attack helicopter
  4. 10. Modern US tank
  5. 12. WWII US tank
  6. 13. Airtosurface missile
  7. 15. US main battle tank
  8. 17. F22 jet
  9. 18. Rapid-fire gun
  10. 19. Airtoair missile
Down
  1. 1. German WWII tank
  2. 2. Drone
  3. 4. Recon helicopter
  4. 5. Machine gun
  5. 7. US main battle tank
  6. 9. F14 jet
  7. 11. WWII rifle
  8. 14. British battle tank
  9. 16. Assault rifle