Just happened to be driving on the Brand Hwy from Dandaragan Redgum Village to Perth on wednesday and saw plenty yellow vest guys hanging around waiting on the road side for something to arrive.
On the way back to Dandaragan driving past the same spot, I assume this is what they were waiting for:

Powerlines brand hwy dandaragan

Quite cool I thought, certainly makes flying a chopper an interesting sport.

Hers another shot.

Power lines Brand Highway Dandaragan