The following is not my work. I copied it from another forum in case it's of interest.
"I happened across this military document (originally produced in the 1970s) on how to apply forest fires as a military weapon.
https://apps.dtic.mil/sti/pdfs/AD0509724.pdf
It was given DARPA authority in 1983 and produced to be distributed by authorised US Government Agencies and their contractors and goes into great detail of these strategies over some 170+ pages."
In the forests of Del Norte County/So. Oregon, where there are huge fires now, and have been in the recent past, it looks like the as yet unburned forest floor has been gathered up into piles for bonfires. I had thought it was for cleanup to prevent fires. There is something that looks like black plastic on top. The military document, in the section on Ignition, says that regularly spaced piles of burnable material is best for ignition. Now I wonder if they are conflagrations in waiting.