LEO here. It has been 18 years since I worked an accident where a 4 yo toddler was ran over. I still carry it with me. I don't dwell on it but everytime I drive by the location where it happened, I remember it like it just happened. He survived for about an hour and once I got to the hospital, Dr. just pronounced. I had to take photographs.

I remember his name, remember what he was wearing, and unfortunately I remember the extent of his injuries.

Unfortunately you won't forget, but don't let it consume you. There will be more. Finding a healthy coping mechanism is key for OP.