"Since September, bushfires have killed 18 people and destroyed more than 1,200 homes across NSW and neighbouring Victoria. At least 17 people remain missing after fires this week alone.
Thousands of people are already fleeing a vast "tourist leave zone" in NSW, with supplies running low in some cut-off towns. It's been called "the largest relocation out of the region ever".
Troops are also preparing to evacuate some of the 4,000 people trapped by fires in Victoria."