Other: The Digital logo on the laptop has been turned upside down especially for the film, since the logo would otherwise show upside down to the camera when the laptop is in use (most laptops are the same - the logo is the right way up to the user when the lid is shut).

Continuity: When the Russian Major is talking to the other lower ranking soldier just outside the train, in one particular shot the soldier is looking directly at the Major. Then in the following shot he is looking down at his feet, and lifts his head up twice to look at the Major again.