I meet a retired railroad engineer who said his locomotive had struck and killed eight. He knew he had no guilt, but the worst one was 4 guys in car stuck on the tracks and he can always remember their faces looking up at him in horror.
Mrs lightman’s grandfather drove a PRR Decapod in the middle division and his father-in-law also was a PRR engineer.
Both deceased long before I entered the family...but I have to wonder what they may have faced.