I don't think any of this was quiet. If you look behind one mobile home there's at least three dog houses. They had dogs and other animals on property. Chris the father was a big man, him and Gary were both beaten and shot. Frankie was a big young man, also. They were all tough country people, and they were also hunters, so they had weapons. Since the suspects also knew the family, bec they went to Kenneth's home, they had to know all of this before they went there.
Someone stated Chris Jr was found at the intersection so he had to have heard things and took off running. I could see him running for help. There were gunshots, probably screaming from more than one mobile home, and this is the country where it's quiet. How could this just be one suspect? Also not one of them called for help. I doubt ninjas were in Piketon, or anyone around there had silencers so I see more than one person.