The circumstances as given were shocking. It feels even worse knowing that you are a friend of a friend, residing in Las Vegas, and a fellow BYU fan/CBer.
I am so, so sorry for your loss. My brother lost his eight year old son in a similar kind of accident some 22 years ago. It has a difficult road to get through life without him.
Shortly after my nephew's passing, he appeared to my brother in a dream. He was a little older, about 12, and was on a beautiful estate with some other boys his age. As my brother walked to the group where his son was, his son turned to him, approached with open arms, hugged him and said: "Dad, I'm so sorry." My brother felt him, could even smell him. It was so real. He woke up with the understanding that his son was aware of the suffering caused by his departure from mortality, that he was well, and did not want his father to grieve. That brought my brother a great deal of comfort.
I recently lost my mother to cancer. She was diagnosed for the first time already at Stage IV and the Lord allowed her to tarry with us for another three months. Two weeks before Mom's passing, she saw my nephew seated at her bedside watching over her. She was comforted by the fact that her grandson was coming to help her pass to the other side.
Losing my nephew was terrible for me. It was many, many times worse for my brother and sister in law. I can provide assurance of the Plan of Salvation and the goodness that will come in the future, but in my most recent experience of loss, the greatest balm for my wounds were expressions of love and condolences.
My friend, I am very, very sorry for your loss. We have never met, but I want you to know our family loves you, is praying for you, and promise that you will get through this - as painful as it is and will continue to be for some time. God bless you and your family.