BY DARLA SLIPKE, Staff WriterATOKA — Glen Killion’s family planned to keep a seat open at the head of the table this Thanksgiving. It’s where Killion would sit. The Atoka County man has been missing since July 18, and authorities and his family are still searching for answers about his disappearance. The day he went missing, Killion told his wife, Doris, he was going into town.Read more on NewsOK.com