Mine is 28.  I would tell you map but I can't remember....  Anyway I used killstreaks Predator, Herier then AC130 and got a final score of 49/10.  what is your highest and Map if possible?

 

Got up to 15 with the help of a Predator and a pair of helicopters, not bad so far.

Mine is 30, and the map was Wasteland. My killstreaks were Sentry Gun, Harrier Strike and Pave Low. My final score was 30/0.

17 here...
 
I've bought the nuke simply because I ran out of desirable killstreaks to buy, but I got a 17 streak using an AC-130

Only 9.  ~__~

I got 21. I think it's okay, but I could have gotten higher if I didn't rush as much as I did.

At one point I got an AC-130. Not sure how many that is right now, fatigue is setting in.

Only a 22. I came in mid-game so my 22nd kill was the game-winning kill; I would have gotten another 5-10 kills, since I had just gotten up my chopper-gunner on high-rise

6 :(.  I can never manage to get more than one kill at a time with the predator missile.  Looks like I'll have to switch back to the sentry gun.

To this day I dont know how the hell I survived. But I went 32-0 on Sub Base. I was yelling the whole time just because it was so intense. It'll never happen again, it's one of those freak things

" To this day I dont know how the hell I survived. But I went 32-0 on Sub Base. I was yelling the whole time just because it was so intense. It'll never happen again, it's one of those freak things "

I've done in the mid-20s, but in an unrelated team deathmatch game, I went 48/6

Got 25 a couple times. Pulled off a nuke once with a Harrier and then a Chopper Gunner.

15.

My highest was 22. I really don't remember which kill streaks or map though

my highest is 8.

" Over 9 thousand "

38 

24... and i had my nuke equipped, i can't tell you how many bad words I said that day.

20, on Scrapyard. Using UAV, Harrier, and AC-130.

12 on sub base. i love that map.

My highest is only 13 (discounting kills gained by killstreak rewards) It was on Rust in a Free-for-all match. 

8.
 
I blame lag.

26. I got it from Predators Missile, Harrier and Chopper Gunner; arguably the best setup for messing shit up.
 
I haven't had a easy time getting high killstreaks since, ever. My COD4 killstreak was 24 and that consisted of me basically camping around with a LMG and the other team royally sucking ass.

Mid to high 20s on Derail, I think. Too bad my highest killstreak reward is the harrier.

Mines 13. But i blame lag. I've never played a game where my signal bar isn't red.

Mine is 23

6 on Highrise I'm pretty sure

52 including the nuke kills. My personal record so far hehe...

I got nuked yesterday, someone got a 35 killstreak...

Six. I'm not that good.

I got 22, but some of my friends have gotten upwards of 30.

24 before dying. Sucked.

17 on Team Deathmatch on Overpass. I was hoping to get the nuke, but someone knifed me : (    
I used the Attack Helicopter with the Pave Low and didn't get as many kills as i would have liked to. I'm assuming the way to get the nuke is to use the ones you control yourself, like the AC10 and Chopper Gunner.
 
Ended up with a 23/2.

41
Chopper Gunner is your friend.

16 playing free for all on Dust.

14 :(

4... woooot

11 i suck at getting kill streaks.

14 I think.

10 I remember that day I was screaming like nuts cause i kept thinking I was gonna get killed at any second. It was on team deathmatch can't remember the match but I was on top most the match can't wait till I can do what I did then every match!

" 17 on Team Deathmatch on Overpass. I was hoping to get the nuke, but someone knifed me : (    I used the Attack Helicopter with the Pave Low and didn't get as many kills as i would have liked to. I'm assuming the way to get the nuke is to use the ones you control yourself, like the AC10 and Chopper Gunner. Ended up with a 23/2. "

14. Realised i still had emergency airdrop so i used it and some guy comes along and decides that it would be funny if he kills me and takes my AC130. On Derail.

31

Only eight or nine. I honestly don't play the game that much anymore, and I always seem to get gunned down whenever I start feeling hot.