Cold Blooded pro, requires 1 helicopter

Don't know if you allready know this.
All you need is this:
- AT4 or RPG
- A LMG
- Cold Blooded
- An enemy helicopter
~ Sleight of Hand is usefull

If there is an enemy helicopter first shout it with your AT4 or RPG, and then start shouting it. When you have no bullets, just kill yourself with a frg or something. When you destroy it with bullets, it won't explode but it wil crash. When it spins arround, you should keep shouting it. Every bullet you hit will count as destroying aa killstreak.

Hope I helped.

Ha, I love doing this me and a friend were in a lobby and they were doing some glitch they got like 3-5 pave lows and a bunch of chopper gunners, I got the Emblem from 0 to 250 destroyed enemy killstreaks, but my k/d did suffer ;D