RBBM
Dad gets off work around midnight. Crime supposedly occurred around 12:32 a.m. We have roughly half an hour between these events. This has me thinking.
I mapped the distance between the Jennie-O plant and 1268 13 1/2 Street. If I am correct, it is only 2.5 miles. At midnight, I bet he made it home in about 5 - 10 minutes.
Is it possible Jayme's dad got into an argument with someone at work, who was known to the family, and it escalated into violence? Possibly someone with a long-standing grudge against the family that finally boiled over?
Now, I am thinking someone knew his schedule at Jennie-O and may have been waiting for him to come home. This might explain the fact that the father was shot close to the door--he probably had just stepped into the house and then the crime happened.
Just speculating. JMVHO. Link to map enclosed for perusal.
Google Maps
ETA: inthedetails and nobodyuknow22, I see we are heading down the same path, per se!