I periodically check Chad's RSO status; it is unchanged, he is still missing too. At one point, I wondered if he was responsible for HC's disappearance and RC's family took care of him. Not saying this is what happened, just a thought I had.
I do believe RCs family would take matters into their own hands, and that is JMO. I just found it odd that they were not demanding more action from LE.
We are nearing the five year mark and nothing ... very strange.
I believe RC loved his daughter more than words could explain. Again, JMO