Plane flying to Greer appears to be owned by this dude: http://winstonsalem.nm.com/~OfficeProfile.htm
It is either just a joy ride or is picking someone up, scheduled to be on the ground for 6 minutes: https://flightaware.com/live/flight/N58EL/history/20200429/1620Z/KPGV/KINT
Richey coming out of left field for the job doesn’t seem likely, but right now this is the best flight info we have.