When the reverend stops to give Jeremy a ride, his truck is completely on the left side of the solid white line but when they start to drive away the truck is way over the line.
The x-ray that is shown of the little girls broken arm is in fact a fracture of the lower leg-tibia/fibula.
At the beginning, you see an aerial view of Council Bluffs Iowa. This is actually downtown Grand Haven, Michigan.
When the mother and kids meet 'Jeremy' at the rest stop in Iowa, there is a map in the back that says 'Welcome to Iowa' and focuses on the Council Bluffs area. The mother (Mare Winningham) says she will take him to the police station to find his mom, but when they arrive, it is in Des Moines, which is 3 hours from Council Bluffs.
When Nancy Riverton is driving with Jeremy Sayer toward the end, one can see hills or mountains through Nancy's window in the near distance. The events take place in eastern Nebraska/western Iowa, where the terrain is exceedingly level, and no such uplands exist.
In S6-E5 - Safe Haven - Garcia says that she is an only child and yet in S2-E2 - P911, she says that she had four brothers.
Penelope Garcia states that she grew up an only child and needs info on how siblings interact with each other. She got 4 stepbrothers in season 13.