I can't believe I never noticed that before! Good job pointing that out! I never even noticed that Luke and Han didn't use the mics either! And I don't see why all these people are getting upset about you pointing it out. At least it's original. It doesn't destroy the prequels (other things do that ^_~), but it's still fun to talk about it. All you naysayers don't have to stick around and keep talking about how it's stupid. To each his own. Maybe troops made of CG are forbidden by Galactic law to use microphones, whereas real guys in suits can do it! Hmm? You don't think so? Well, who has any better suggestions?