Israel Aerospace Industries (IAI) has a two-drone solution for fighting wildfires, for presenting at the XPRIZE Wildfire Competition in the US. One UAV sees through the smoke to locate the source of the fire before it gets out of control. The other UAV sprays a flame retardant at that source.

https://en.globes.co.il/en/article-israel-aerospace-develops-wildfire-drone-solution-1001473135