The Shotgun by Taddare

"I only vaguely remember the incident, but one night both of my grandparents were woken up by a loud sound. My grandmother swore it was a shotgun. My grandpa said it was a car backfiring since there was no one nearby who would be shooting — we lived pretty far from anyone. They bickered over it for a bit then went back to bed.

About 15 minutes or so later, the phone rang. It was my aunt. Her husband had been shot with a shotgun by a neighbor just 20 minutes before. The thing is, they lived seven states away."

From AskReddit