Across
- 1. Center-right Australian political party
- 2. Densest metal
- 9. Sole NFL franchise with a perfect season
- 10. 18th century invasion warning system
- 11. Working cow
- 12. Two-day escape
- 14. Pioneer of aviation
- 16. Green ogre
- 17. No. of Brady rings
- 19. Longest U.S. river, state namesake
- 20. Largest U.S. state
- 21. Four-time electoral victor
Down
- 1. The one who can open any door
- 3. Chinese border city
- 4. Meat inspection org.
- 5. Hockey games have them
- 6. Baking tool
- 7. Exaggerating blows it out
- 8. Mark indicating exception
- 9. The Emerald isle's capital
- 13. Dry-erase marker monopoly
- 15. Truck fuel
- 18. Tiny Micronesian island nation
- 19. Current chef d'etat