Guess who?

12345678
Across
  1. 6. I prepare delicious foods.
  2. 7. I explore the outer space.
  3. 8. I put off fires.
Down
  1. 1. I fly airplanes.
  2. 2. I treat patients.
  3. 3. I teach in school.
  4. 4. I protect the country.
  5. 5. I plant crops.