When my brother was struck in the heart by lightening and killed instantly, I went on a personal quest to find the answer to why trajedies like this have to happen. It's fifteen years later, and I still haven't found the answer, though my pain has eased with the passage of time.
Hopefully, my HP will reveal the answer to me one day. Though it makes no sense today, I believe that one day the divine plan will be revealed to all of us.
Sending prayers of peace to you, your father, the young man's friends, family, and loved ones. What a tragic loss for everyone involved.