A couple of years ago, on a flight to Detroit, a passenger died in the row behind me. He was in the Y bulkhead and the woman next to him screamed for a flight attendant. They cleared the row out and asked if there was a doctor or EMT on board. There happened to be a few, including a heart surgeon. Was very impressive watching them work as a team. Unfortunately, the doctor said there was nothing more they could do.....He covered him with a couple of blankets and reclined the seat.