MENTOR, Ohio — It was supposed to be an ordinary Friday night.
Yianni Sarris, 33, was at his parents’ home in Mentor helping his dad cut down some dead trees in the backyard. His mom had just left to pick up pizza; his dad had gone to the garage to grab a battery for the saw.
For a few minutes, Yianni was alone — one last swing at a tree before the Cavaliers game started. Then, he heard a boom…