BDR: So the terrorist says to his henchmen, he goes "Shoot the glass! Shoot the glass!" He's trying to get , they're trying to get the glass to fall on John McClane. There's actually a similar moment in Mirror's Edge where there's all these chandeliers, and if you shoot the chandeliers, the chandeliers will shatter and drop glass on the ground. And if the bad guys happen to be underneath the glass, you can actually take them out that way. That's an in-game effect that you only get on PhysX, and at that point, it's advanced from a dramatic effect to the question "how do you play the game differently?"