What Word is Missing in the Title?

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Across
  1. 1. Camping Trip that America
  2. 4. Terrible
  3. 7. The Dollar Shot
  4. 9. Holler
  5. 10. Night of the
  6. 12. The Seven Wonders of Sassafras
  7. 14. El
  8. 15. The Way to Luna
  9. 16. Bud, Buddy
Down
  1. 2. Detectives
  2. 3. Each Bird that Sings
  3. 4. Snow
  4. 5. Gregor the
  5. 6. Harry and the Sorcerers Stone
  6. 7. Where the Meets the Moon
  7. 8. Fortunately, the
  8. 11. Dealing with
  9. 13. Full of
  10. 14. Squad