Rocket Science # 9

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Across
  1. 1. Warrior, Champion of a cause esp w/ Charlemagne
  2. 3. Alert state used by the US Army
  3. 5. The same, basically
  4. 9. Generosity, altruism
  5. 11. Pete Sampras rival
  6. 13. Royal gas, not here anymore?
  7. 15. Breakfast at Tiffanys singers
  8. 18. one of the 5 basic tastes
  9. 19. Lets chat! (but not with words)
Down
  1. 2. Intricate, graceful
  2. 4. Hermione's' pet
  3. 6. 'Side to side' singer
  4. 7. Not hard
  5. 8. Heathcliff's creator
  6. 10. The greatest riddle creator of all time
  7. 12. The ability to move and respond quickly
  8. 14. Permitted, lawfully
  9. 16. Philatelists LOVE them
  10. 17. If it's a King novel, it's probably here