3 kill streak:UAV/Ammo Drop
4 kill streak:Counter UAV/Care Package/Land Drone(RCXD)
5 kill streak:Air Strike/Mortars/Special Weapon Drop
6 kill streak:Air Drone[RCXP(Remote Controlled Explosive Plane)/Reaper
7 kill streak:Machine Strike(Air Strike but with machine guns)/Helicopter/Sniper Team
9 kill streak:Dogs/Pavelow
11 kill streak:Chopper Gunner/AC-130/Rocket Turret
13 kill streak:EMP/Toxic Strike(like Nova 6)
15 kill streak:Nuclear Strike(kills anyone in its radius,doesnt end the round or match)
25 kill streak:Tactical Nuke(ends round but not match)
30 kill streak:Atom Bomb(ends the whole match)
Also,the perk 'Hardline' should make killstreaks and deathstreaks need 1 less kill,and pro should make them need 2 less kills(UAV for 1 kill!)