Some years ago I saw a big accident happen in a tunnel just a few cars ahead of ours. Someone left the cars with their legs, someone didn't. Police and paramedics were there just after a few minutes and took people out. I remember a guy, he seemed young. He was still alive, they put him on the floor and tried to stabilize him. I remember the paramedics talking and yelling instruction, but it was too late and the guy died after ten minutes in front of us. I remember I was shocked and scared for days.
I hear of deathly accidents every day, I had saw bodies and people dying before, but to see it like that...it was shocking, even not knowing the guy at all, so I think your reaction is totally normal. And even the huh part is normal.

*hugs*