I knew a train engineer when I was young. He was in his 80’s in the 1980’s.
I asked him once how he dealt with the inevitable death of people from his engine.
He told me that he had lost count but that early in his career he had to make the determination that someone getting killed by his train was in no way his fault.
But for the engineer driving this train, having two officers die in the line of duty has to hurt.
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.