Make the best class you can make, then set your killstreak to predator missile, precision airstrike, then emergancy airdrop.

Then on a game get a predator missile and find a good hiding spot. Get at least one kill then you get the 6 killstreak precision airstrike, then use it on the enemies spawning area to get at least 2 kills.

When you get 2 kills you get your emergancy airdrop.