 FAKE: Near the end of the corridor firefight, Schaffer retreats into  the room and a German soldier throws a grenade through the door. In  the widescreen version you can see the grenade strike the door frame  and bounce back at the actors feet, yet there is an explosion  inside the room where the grenade would have landed. And grenades do  not explode in a fireball as shown in this, (and other) movies.