When Woodard is being threatened with a gun in the field, the man holding the gun has his finger across the trigger guard when seen from the left but within the trigger guard on the trigger when seen from the right.
Wayne criticizes the anti-war movement by saying that the protests ended once the draft did, implying that the anti war protesters only cared about their personal safety. In reality the draft ended in 1973, after the withdrawal of US troops from Vietnam. A veteran like Wayne would certainly know that.
During the Walmart scene when Wayne is searching for his daughter, a woman squatting in the aisle is taking on a smartphone.
The light blue Ford LTD parked next to West Finger Community Center is a 1983-1986 model while the story took place three years earlier in 1980.
About the middle of the episode, when detective Hays is following the clues/trail in the woods. You can spot a camera behind the stone, behind his back. Visible after he spots the blood stains on the stone.