My heart hurts for these families and friends. I know no one will understand even if they have been through a similar situation (which I have) I pray for the siblings of the 2 students lost I know that you will be affected just as hard as your parents ( I lost my brother when I was 14) Never let anyone tell you the pain will go away it will not it will get easier though I promise. If you ever want to talk to someone PM me I don't know either family but I know God will bless you in this situation.
My prayers are with you