Here is the list of leaked Strike Package Rewards (formerly known as Killstreaks) in Call of Duty: Modern Warfare 3. These are not guaranteed of course to be in the final game, but there is a lot of talk about them and I believe most of them are correct so far.
You’ll notice right away that there are now different groups of Strike Packages to choose from. Each Strike Package is essentially geared toward a different type of player.
The Assault Strike Packages are geared more toward the fans of the original killstreaks, where your points start over when you die, and your kills from other Strike Packages add to your points, like in Modern Warfare 2.
The Support Strike Packages are geared more toward team and objective play. Your points don’t start over when you die, however I believe that kills from other Strike Packages don’t add to your points either, similar to Black Ops.
The Specialist Strike Package seems geared toward your old school gamer that prefers to run and gun instead of worrying about air drops and such. With the Specialist, you choose perks from the list of available perks, and those become unlocked as you gain kills (overkill is apparently the only perk that can’t be used with Specialist). I think this package is the most interesting of all, and it may be pretty fun to play with.
Assault Strike Packages
4 Points — Care Package – Standard air dropped care package
5 Points — IMS — Three or four placeable landmines, immune to stun and flash
5 Points — Predator Missile – Guided precision missile
5 Points — Sentry Gun – Placeable AI controlled turret
6 Points — Precision Airstrike – Three F-15’s blow up chosen area
7 Points — Attack Helicopter – AI controlled Helicopter with machine guns
7 Points — Little Bird Flock — Mini Helicopters which patrol the map
9 Points — Little Bird Guard — Large Helicopter that follows and protects you
9 Points — Reaper — Five randomized predator missiles
10 Points — Talcon — Mini RC tank robot
12 Points — AC130 – Large airplane gunship
12 Points — Pavelow – Large Attack Helicopter with mounted guns on each side and two flares
15 Points — Juggernaught Suit — Large armored suit, equipped with an LMG, and a pistol secondary
17 Points – Osprey Gunner – Large chopper gunner
Support Strike Packages
4 Points — UAV – Spy Plane
5 Points — Counter UAV – Counter Spy Plane
5 Points — Ballistic Duffel — Drops the Juggernaught perk for the whole team (not the suit)
5 Points — Airdrop Trap — Drops a booby-trapped care package
8 Points — Sam Turret – Anti-aircraft turret
10 Points — Remote UAV — Target enemies with missiles
12 Points — Advanced UAV — Blackbird, see enemies and their movement direction
12 Points — Remote Turret — Placeable Sentry Gun that you control
12 Points — Stealth Bomber – Guided carpet bomb
18 Points — EMP – Electro Magnetic Pulse, destroys all electronics in the area?
18 Points — Juggernaught Recon Armour — Care Package Drop Armour
18 Points — Escort Airdrop — Drops 5 care packages, one will be booby-trapped
Specialist Strike Packages
2 Points — You get one extra perk
4 Points — You get two extra perks
6 Points — You get three extra perks