 CONT: As Davis walks along the track he gets caught by a loose  branch around his boot. After disentangling himself, he asks Brodie  how far away the plane is. Brodie informs him that it is about a  kilometer away, and they wont make it before dark. At this point  Brodies jacket buttons are on the left side of his jacket. Cut back  to Davis, who says they will make it. When the camera cuts back to  Brodie, his jacket buttons are now on the right side of his jacket.  The shot is in reverse.