The shotgun pellet wounds on Sean Penn's face disappear almost immediately and leave no scars.
During the rape in the motel room, Brad Sr. chains the door, but the door is unchained/chained again in subsequent shots.
After Brad Jr. fires off several rounds around his father, he shoves the end of the handgun's barrel right into his father's face. The heat from the rounds that were just fired seconds before should have been enough to burn his father's face, yet Brad Sr. doesn't flinch, and when Brad. Jr. pulls the gun back from his father's face, there is no evidence of a burn.
One night, while Brad Jr. and Terry lie in bed, a steam train whistle blows in the background. Steam trains had long been decommissioned in the 1980s.
In the kitchen scene with Penn and Walken toward the end of the film, a crew member can be seen in the kitchen window.
The story takes place in Pennsylvania, but in the night time scene in the town square, a bright First Tennessee Bank shines.
In the first heist after Brad quits his dad, they are stealing tractors from the Franklin Implement Inc which is where the film was made in Tennessee rather than Pennsylvania where it took place.
When Brad Sr is being walked into the courthouse after being arrested, the building behind him is the Williamson County Bank located in Franklin, Tennessee not in Pennsylvania where the events took place.
Reflected in passenger-side window of truck when Brad, Sr. brings Terry to the motel.