What the Fire! Bonus Round

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Across
  1. 1. A synonym for a very large, burning fire.
  2. 5. Portable canister used to put out a small fire.
  3. 7. Thermal energy that completes the "fire triangle".
  4. 11. Ceiling-mounted safety device that senses airborne fire particles.
  5. 13. The breathable gas that makes up one-third of the "fire triangle."
  6. 15. The visible, glowing, dancing part of a fire.
  7. 17. A loud noise or bell that warns people to evacuate a building.
  8. 19. The criminal act of deliberately setting a fire.
  9. 20. A tiny, glowing, flying particle that can easily ignite dry brush.
Down
  1. 2. A fire famously started in a bakery on Pudding Lane in this city in 1666.
  2. 3. The dark, visible cloud of gases given off by a burning substance.
  3. 4. A large, uncontrolled fire that spreads quickly through brush or forests.
  4. 6. The red, upright street pipe that provides a water supply.
  5. 8. The sharp, heavy hand tool traditionally used to breach locked doors or walls.
  6. 9. Wood, coal, or gas—the combustible material in the "fire triangle."
  7. 10. The heavy-duty, flexible tube firefighters use to spray water.
  8. 12. A fire raged from October 8-10, 1871 in this city.
  9. 14. The traditional spotted breed of a firehouse dog.
  10. 16. The primary mission of a firefighter when someone is trapped.
  11. 18. The gray, powdery residue left behind after wood burns.