Predator --> Harrier --> Chopper Gunner

Look, I love the care package, and UAVs are obviously important. No denying that.

BUT

if you can regularly get to 5 kills (only 4 w/Hardline!) and launch that Predator, then this combo has a chain effect that will just wreak havoc on the other team.

You start at 5, then the Predator kill(s) should get you to the Harrier (7 kills) easy, and then the Harrier kills will almost always get you to the Chopper Gunner (11 kills). Then the Chopper Gunner...whooooo boy. It's hard NOT to get 30+ kills when you can make this chain work.

(It's the same with the AC130, I imagine, but I'm partial to the Chopper Gunner for some reason.)