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I am you shield = I can protect you from evil/the enemyI am your sword = you need me to defeat your enemysounds like she is the key to something[Edited on 5/17/2006]
Discussed already (I think), and check your spelling.
It's her voice, but it's the gravemind talking through her transmission. You can hear a hint of his voice near the start of that.You are talking about the Annoucement trailer?
Misread post my bad[Edited on 5/17/2006]