That's what it means, but without intent. They burned their own land, and the fire spread to 140 acres of adjacent land controlled by BLM. This was not terrorism. It was normal maintenance by politically incorrect ranchers who eat meat and own guns, so the thuggish administration in DC went after them.
normal maintenance
= = =
Compare this 140 acres to the Chelan Complex or Okanogan Complex fires of WA state (exacerbated by Forest Service policy), and to some CA state fires (can’t feel much sympathy for CA).
A flame in time saves nine.