Airport security

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Across
  1. 3. closed or blocked from public access
  2. 4. a person who protects people and buildings
  3. 6. bags left without supervision
  4. 8. a device that finds metal objects
  5. 9. get onto an airplane
  6. 10. tell a security officer about a problem
Down
  1. 1. a machine that scans the inside of luggage
  2. 2. places where only authorized people can enter
  3. 5. official rules for safety
  4. 7. a place where passengers and luggage are checked