Saw a biker die today. I didn't know him. It was bad. I was directly behind the accident probably 2 football fields away. It was on perfect roads in a straight away. Guy crossed over yellow line hit 18 wheeler at the first tandem axle. 18 wheeler did all he could to avoid him. I'm a first responder, I have training...for stuff on the job, not "qualified". I drove past wreck turned back to other side of road. I had already saw his body in the ditch when I drive past. People come out of the house nearest the accident because they heard it honestly it had to sound like an explosion. I'm yelling call 911 get an ambulance. Somehow those people's dogs got out so I'm literally fighting them off the body till the lady that owned them got them away. At this point another person shows up, I still haven't gotten to check the guy. And honestly I did not want to see him. There was body parts on the road. It was ugly. He lost his right leg and if the impact didn't kill him the amount of blood loss did. I can not wrap my head around WHY. What happened he never even tried to correct the bike. Only thing I can imagine is something went wrong on the bike mechanically. I've been in tight situations at work. Million Dollar fuck ups all the time. It happens. I've made it this far because I do not panic. But not today. I was totally unprepared mentally. I kinda froze. It would not have mattered though.