MW3 Killstreaks And Perks

There are 3 DIFFERENT tiers of killstreaks you are able to use.

Assault Killstreaks

4 Kills - Care Package
5 Kills - IMS - 3 or 4 placeable landmines that cannot be stunned or flashed
5 Kills - Predator Missile
5 Kills - Sentry Gun
6 Kills - Precision Airstrike
7 Kills - Attack Helicopter
7 Kills - Little Bird Flock - Mini Helicopters which patrol the map
9 Kills - Little Bird Guard - Big Helicopter that follows you from above and protects you
9 Kills - Mortar team - Mortar team but with 5 predator missiles - all go off at the same time in different places
10 Kills - Talcon - Mini Tank Robot
12 Kills - AC130
12 Kills - Pavelow
15 Kills - Juggernaught Suit - From spec Ops ( for anyone who sais in the spec ops video he gets it at 14 kills, well thats because he has hardline on)


Support Killstreaks

4 Kills - UAV
5 Kills - Counter UAV
5 Kills - Ballistic Duffel - Drop Juggernaught perk for the whole team, not jugg suit
5 Kills - Airdrop Trap - Drops a hacked care package
8 Kills - Sam Turret
10 Kills - Remote UAV - Target enemies with missiles
12 Kills - Advanced UAV - Blackbird
12 Kills - Remote Turret - Sentry Gun that you can control
12 Kills - Stealth Bomber
18 Kills - EMP
18 Kills - Juggernaught Recon Armour - Care Package Drop Armour
18 Kills - Escort Airdrop - Drops 5 care packages, one will be hacked


Specialist:

2 Kills - You get 1 extra perk
4 Kills - Get another perk
6 Kills - Get another perk

Yes, you do get to choose the perk you get each time.


SOURCE: mw3killstreaks.blogspot.com