JQUOTE="NoSpoonFeeding, post: 17832699, member: 295270"]
They were killed at the 1st salvage yard, a mile away from the house they left from.
After being at the 1st salvage yard, Mark Chastain's phone was taken to a gas station, the victims were not at the gas station. Maybe the suspect had to get gas or just pulled in there for some reason, on his way home.
The other salvage yard, which is the residence and business of the suspect, is 6 miles south of the 1st. It looks like the phone ultimately was taken there and turned off.