"Tap Code" People, Places, and Things

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Across
  1. 4. Maker of the Geneva Convention
  2. 6. Also known as Country Club
  3. 10. Brutal prison which was shut down
  4. 11. Lyle's honary godfather / fellow POW
  5. 12. protected the rights of the POWS
  6. 13. Also known as Hanoi Hilton
  7. 14. First American POW Smitty meets
  8. 18. Main protagonist's wife
Down
  1. 1. Name of aircraft Smitty flew
  2. 2. 8 solitary cells in Hoa Lo
  3. 3. taught the tap code to Smitty
  4. 5. Fellow cell mate of Carlyle
  5. 7. Long forgotten communication code
  6. 8. Louise's sister
  7. 9. Critically injured early on
  8. 11. Louise's home maid at Okinawa
  9. 13. Target for Carlyle's final flight
  10. 15. Improvised prison in a movie studio
  11. 16. Toilets in the prisons
  12. 17. Our main protagonist, AKA Smitty