 CONT: During the scene when McClane, the Army commander and the  Police Chief are arguing outside in the blizzard, the amount of  snowfall on the Police Chiefs jacket keeps changing. The first time  the camera shows him, theres a lot of snow on him. The camera flips  away, and then back, and his jacket is cleared of snow. The camera  flips away and back again, and this time theres snow on his jacket  again.