Killstreaks:
Here are 9 of the known killstreak options, out of 15.
3 kills:
UAV- Need I say more? Blocked by Cold Blooded
4 Kills:
Care Package
Description: After you throw the red signal flare, the Care Package will be airdropped into the battlefield. This can be picked by anyone, even the enemy.
The package contains either a random killstreak or ammo. The killstreak can be anything from the UAV to the AC-130 Gunship, regardless what killstreak rewards you have chosen.
Counter-UAV
Description: This disables the enemy radar for a short period of time.
5 Kills:
Sentry Gun
Description: Airdrop a placeable XM312 Sentry Gun. It will automatically fire at enemies, but it can be destroyed.
Predator Missile
Description: This allows you to remote control a Predator missile. After opening the laptop, you have approximately 5 seconds to control the missile to your target, as it goes down. You can also give the missile a boost to make it go down faster.
You are vulnerable while using the Predator missile, but if you get killed, you can still continue to control it.
6 Kills:
Precision Airstrike
Description: This is much like the Airstrike in Call of Duty 4, but this time you can control the direction of the Airstrike for more accurate kills.
7 Kills:
Attack Helicopter-Like the UAV, need I say more?
9 Kills:
Pave Low
Description: This deploys a heavily armored Attack Helicopter (Sikorsky MH-53 Pave Low) to the map for maximum carnage. As with the Attack Helicopter, all the kills are added to your kill count.
11 kills:
AC-130
Description: After deployed via laptop, an AC-130 Gunship will enter the map. You control it remotely for 30 seconds and you can use the 25mm, 45mm and 105mm canons to shoot at enemies. You are vulnerable while controlling the AC-130, but if you get killed while using it, you can still continue.
Note: The AC-130 can be shot down by the enemy, but it does have flares as countermeasures.