The husband and wife swim from the lake, but when the husband sits up for wife to bandage his leg, the back of his pants are dry.
Although the movie is set in the United States, there are Canadian markings on a rescue aircraft.
Although the movie is set near Christmas, there are green maple leaves on a tree in at least one scene.
During the drive to the plane hangar, the scenery in the background behind the vehicle matches the foreground reflections on the vehicle. They're just slightly blurred.
Joseph Johnson's bandaged leg keeps switching, at first he had his left leg bandaged but when they sit down in the forest it's his right leg that's bandaged.