Ok I know Earth has been in jeopardy for every single movie so far...but did you see the size of that invasion force. Alien spacecraft every where, robots littering the streets, mechanical tenacles running through the ground, and giant robot dragon/birds flying around. I mean that kinda ruins the point of robots in disguise but it was freakin epic. Anyway back to the point. Earth is in quite a predicament and it seems that there's gonna be a hell of a lot cassualties. This brings to mind one question...why do we want the autobots to leave?