Last time I checked it was quite normal for big Rotorcraft to blow a lot of dust and debris about the place. So what is new here?
If you have folks that are used to working in Desert Locations then I would think this Paddock seemed no big deal.
It does make one wonder why the Fire Brigade was not brought in to wet the place down a bit exactly as the USFS does in its operations.
I bet next time that bit of Prior Planning shall be on the Check List.