Code Talker Puzzle

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Across
  1. 3. render something ineffective
  2. 4. hide
  3. 6. suprise attack
  4. 7. goal
  5. 9. reject
  6. 11. suited for land and water
  7. 13. humming sound
  8. 14. disorder and confusion
Down
  1. 1. strengthened
  2. 2. bullets
  3. 5. land
  4. 6. attack
  5. 8. unfriendly
  6. 10. missile
  7. 12. fighting