Ugh it's BF fucking 3. Stop shovelling in that Rush mode from BC2 where it belongs.
Let me shed some light on why I dislike this mode in general:
It goes against what Battlefield is supposed to be about. It is supposed to be about open conquest where you can flank and go about doing what you want at any point - it gives you choice and what rush does is funnel you down a narrow linear path of boringness.