I've seen some big pieces go flying.. tulip trees and deadwood are the worst... Definitely something to consider..
If there is any concern about human safety you can generally put in a redirect and get away from danger. We mostly pull with the skid steer, which offers a good amount of protection to the op, so its the buildings and other fixtures that I generally watch out for.
This vid shows how we set up some mats over the lower windows.. I did look this tree over very well to see if it klooked like anything would be flying all the way to the house