Spy Plane

Killstreak Rewards are bonuses that are earned by getting multiple kills in a row without dying. The Hardline perk lowers the required amount by one kill. In COD7 Black Ops killstreak kills (RC-XD, Napalm Strike , etc.) don't count towards your next killstreak - this is something that Modern Warfare 2 players will have to get used to.

When you reach level 10, all killstreaks become available for purchase with CoD Points. You can buy them in any order you choose, but you can only use 3 at a time.

3 Kills

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RC-XD Explosive RC Car

 This killstreak allows you to remote control a small miniature car with explosives. The explosion is big enough to take out a few bad guys that are grouped together.

The RC-XD moves really fast and can go up stairs. It can be destroyed by the enemy.

Unlocked: 1200 CoD Points

3 Kills

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Counter Spy Plane

Disables the enemy radar for a short period of time, even if they don't have a Spy Plane in the air.

Unlocked: 1600 CoD Points

 4 Kills

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SAM Turret

Airdrops a placeable SAM turret that engages enemy aircraft. With this you don't need to carry a rocket launcher around.

Unlocked: 1600 CoD Points

 4 Kills

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Care Package

This works just like in Modern Warfare 2, but this time a slow moving Chinook brings in the package. It's possible to shoot it down more easily due to its low altitude and speed. The Care Package itself contains a random killstreak or ammo.

There are two exclusive weapons that can only be found inside a Care Package: "Grim Reaper" Rocket Launcher and "Death Machine" Minigun. Care Packages can be seen on the radar by everyone: if it's red, it belongs to the enemy team. Care Packages can be booby trapped with the Hacker Pro perk.

Unlocked by default.

 5 Kills

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Napalm Strike

The Napalm Strike is an airstrike that covers an area with slowly burning napalm.

Unlocked: 2400 CoD Points

 5 Kills

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Sentry Gun

Airdrop a placeable Sentry Gun that attacks enemy players. It can be temporarily disabled with concussion grenades.

Sentry Guns are most effective when placed in high places.

Unlocked: 3200 CoD Points

 6 Kills

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Mortar Team

Allows you to target 3 locations on the map that will be bombarded with Mortar Strikes.

Unlocked: 3200 CoD Points

 6 Kills

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Attack Helicopter

Deploys the classic Attack Helicopter, just like in the previous Call of Duty games. It will circle around the map and attack enemies for a short period of time.

Unlocked by default.

 7 Kills

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Valkyrie Rockets

The Valkyrie Rockets are brought into the map in a Care Package that you have to pick up. You get 2 rockets. Valkyrie Rockets are controlled in 1st person (see the 2nd picture below) and can be controlled in all directions, but they have limited fuel that's indicated by a green bar.

You can boost a rocket to give it extra speed and also detonate it whenever you want. They are also hard to control, but the rocket has a moderate explosion radius, so you don't need a direct hit to kill an enemy.

Unlocked: 4000 CoD Points

 7 Kills

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Blackbird

Deploys a SR-71 Blackbird to monitor the map. You can see both enemy position and direction on the radar. The Blackbird doesn't have a refresh rate like the Spy Plane, so you can see the enemies in real-time until the Blackbird leaves the map.

The SR-71 Blackbird can't be shot down. Players using the Ghost perk won't show up on the radar.

Unlocked: 4500 CoD Points

 8 Kills

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Rolling Thunder

Calls in a plane to carpet bomb the selected area. This is pretty much the Stealth Bomber killstreak reward from Modern Warfare 2.

Unlocked: 4500 CP

 8 Kills

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Chopper Gunner

Be the gunner of an attack helicopter. You can attack enemies with a minigun from the side of the helicopter. It's likely that enemies can shoot you inside the helicopter, since you are visible and the helicopter doesn't fly that high.

Unlocked: 5000 CoD Points

 9 Kills

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Attack Dogs

This killstreak will spawn dogs to hunt enemy players on the map. Dogs can kill a player with one bite, so they should be killed as quickly as possible.

Unlocked: 6000 CoD Points

 11 Kills

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Gunship

The gunship (helicopter) is fully controllable by the player. You can use both the minigun and rockets to kill enemies.

Unlocked: 6000 CoD Points

11 Kills 

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