Visible crew/equipment: In the very last scene, Daddy Slocumb's funeral service, Ray hugs his mother, then he and his wife prepare to leave the church. As they are leaving their seating area, a female crew member enters and signals to someone in the back of the church by waving her arms.
Continuity mistake: When Jr. is driving with his family in the car, you can see a car behind them. Not only does the care stay the same length behind them as he speeds up to 100 mph, but when he pulls over and puts the gun on his wife, you never see the car pass him. It may have passed when the camera was on the wife, but then we should have heard it (the window was down: we know that 'cause he threw his kid's shoe out). Yet when he pulls back onto the road, the car is not behind him.