In the end scene where Don Eppes and Gary Walker are standing over the grave of John Everett. Walker is holding bottle of alcohol that he hands to Don. Even if the bottle is not seen in a few seconds after that there is no indication that Don gave it back to Walker but next time its seen on screen its back in Walker's hand. Soon after that it again mysteriously ends up on Don's hand and stays there until he gives it back to Walker in the end of the scene.