http://www.dispatch.com/content/stor...-lookback.html
The ride-along part of the video gives better perspective as to just how far away DR's house was from CRsr/FRs trailers. There is no way that killing everyone at DRs was done because they could have seen or heard the actual murders of CRsr/GR/FR/HG - they are just too far away for that to be necessary.
So either DR/CRjr/HR were killed because on or more of them knew who had been with CRsr that night, or they knew enough to point the finger at the killer, or they were somehow involved in whatever was the motivation for the killing (either in reality or in the mind of the killer). And just like with KR, it does indicate that the killer was familiar enough with the family to know who lived where, especially since housing arrangements had recently changed for several family members.
I do think that FR/HG could
possibly have been killed simply due to their proximity to CRsr/GR or vice versa.
Traveling a mile to DRs house is not that much different than going over to KRs. It had to be a deliberate move, not just a case of 'wrong place, wrong time'.
BTW, what the heck is the difference between a hilljack and a hillbilly? The mayor uses both terms in this interview and until now I'd never heard of a 'hilljack'.