Cutting down trees

About a month ago I noticed that I had a dead pine tree in the back yard, one of the two trees holding up younger niece's hammock, in fact. As said tree is at the fenceline, at a corner of my garden shed, and at the corner of the neighbors' house (not my brother's family but the other neighbors), it needs to come down.

( More, with satellite view of the lot )

The cats, of course, find this all very distressing. People walking by the windows, strange noises including the occasional loud thump--all this on Friday, when I'm supposed to be available to provide a cat-lap and other services as required. It's Not Right.