Trimming of the eucalyptus tree

in our backyard. There is a long history of the eucalyptus in California, they were introduced in 1850's during the gold rush and in early 1900's were promoted by the government. 
We had a beetle problem in 2020 when 30,000 of those trees were killed by a little beetle just in our area. It's a real long story... that I am not getting into it right now, I have to keep an eye on the operator here in my back yard. You can see the guy who is cutting the tree on the upper left corner with an orange hard hat.