The most kick-ass helicopter in the world. Seriously, this thing can seek and destroy it's targets from so far away you can't even hear it. The coolest thing about it is that there is an aiming reticle on the visor of the weapons officer's helmet. All he has to do is look at his target, and the gun aims there too!
The AH-64 Apache, even if you can't see them, they can see you.