Oh, wow. The presence of police, and your dad (presumably stressed) sounding/speaking like you were in trouble, and hearing that you might not get back home that night... that would be so scary @Flutterbug9 . I can imagine as a child it could be so easy to also interpret that as "might not get back home ever" and "what did i do wrong? Why is dad upset with me?"
I would never wish that experience on anyone, adukt or child. I can understand why that memory has stuck with you all these years. It would be quite understandable if the mention or sight of any bushfire/grassfire evokes anxiety, fear, panic, etc. Or even just the smell or smoke from a safe campfire as a trigger.
What helps you to feel safe when these feelings arise?
Reminding yourself that you are physically safe now?
Having an evac plan and go-kit "just in case"? (Our local firefighters hand out packs that include a kit advice from RSPCA about preparing to take your animals, or how to prepare them if you cant take them and also a sticker for the window to notify that there are animals on the property still needing evac.)
I'm such a "planner" person, so for me having a kit ready to go would be essential if i felt i was in a risk area. It would make me feel that at least i was ready to grab the basic essentials and my pets into the car -- everything else can be bought or replaced. (Although i am a VERY sentimental person, so i get attached to "things" because of the memory/person they represent, so losing everything in a fire would be especially distressing for me on top of the all the other reasons).
My brother-in-law is in one of the volunteer fire units for his local area. He was (still is? Not sure) sent out to help with some of the fires this past week. I am trying to recall if this would be his first "big fires" callout - rather than just local little things they need to attend to.