Not sure myself. But if I remember right I think the man was seen sitting in his truck in the morning outside their house. I sure this has been posted before but here is aged progressed composite:
Cold Case USA: WHO MURDERED JENNIFER SHORT AND HER FAMILY?
Here is a sketch of the truck he was sitting in:
Kidnapping, Murder, and Mayhem: Jennifer Short Murder Update
Here is part of the article. The eye witness who say the suspect said he had rugged features as if her were an outdoors man type:
The FBI has released a sketch of the truck, described as a 1998 to 2002 white, single-cab, two-ton stake body truck with wooden rails. An unidentified man was seen sitting in the truck along U.S. 220 in the vicinity of the Shorts’ Oak Level home, according to the FBI.