BBM.
A few comments/questions:
First, the mention of great-grandfather not considered a suspect comes after the reporter states that Jessica Mitchel and DeOrr Kunz are not suspects at this time. It does not seem to me that Sheriff is using the words interchangeably. Rest assured, LE does not ruled out people casually. They do not say great-grandpa was ruled out as a POI because it is my opinion that he will not be a reliable witness. Great-grandfather's health is definitely serious, both physical and mental which brings me to point #3.
Why would you think a great-grandfather whose health is so severe that caused him to be ruled out of a police investigation, would be capable of watching after an active 2 year old or in their words "he was going to be good with grandpa by the campfire"?. I could understand (if they were not aware of IR's criminal record) if they have said ""he was going to be good with grandpa and friend by the campfire" but no mention of the friend at all during the interview. As a matter of fact, it makes the viewer deduce that during that very crucial moment of the toddler's disappearance it was only little DeOrr and great-grandpa alone. IR seems to disagree. Actually, it makes the viewer deduce that the only people during the trip were: Mom, dad, little DeOrr and great-grandpa. The omission is intriguing.