Air traffic controller/Thanassis

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Across
  1. 3. The airplanes need to keep flying ...... on time.
  2. 7. He may work ..... or weekend shifts.
  3. 8. he coordinates the movement of airplanes
Down
  1. 1. He usually works forty hour..... .
  2. 2. It's a very ..... occupation.
  3. 4. Mathematics and Electronics are helpful for this..... .
  4. 5. He handles every plane that's taking off or ...... .
  5. 6. ..... communication is helpful for this occupation.