Who am I?

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Across
  1. 4. I am the son of William, fondly known as Bill
  2. 7. Time to face the …, expression
  3. 9. A drink that cannot be diluted
  4. 10. Outgoing, socially confident
  5. 13. Jack Welsh was the CEO of this international company
  6. 15. Fine can affect the supply of funds
  7. 17. Light covers
  8. 18. Gang used nerd and I working on a plot
  9. 19. Unlikely to make the first move
  10. 20. Subjecting to a great heat
Down
  1. 1. Weather shifts, … change
  2. 2. Three short of a baker's dozen
  3. 3. Pet bird (abbrev.)
  4. 5. Protection, cover
  5. 6. I am a part of this Program (3 letter acronym)
  6. 8. A quarterly conference that I work on with Bronwyn Ray and Brooke Smith
  7. 11. My first name consists of six letters and four of those consecutively make a number
  8. 12. They may come with crayons, at restaurants
  9. 14. Four letter acronym starting with B
  10. 16. Meteorologist's job