You have to be smart and not be too aggressive. Don't make a silly mistakes. You will have to, camp for the most part if you are not good at getting high killstreaks. That is where your motion sensor comes into effect. The trick is to be stealthy and don't get into a such obvious camp spot. If I am aiming for High Killstreaks (I use BlackBird, Chopper Gunner, Attack Dogs), I will mostly use this class. Primary - Any Gun besides Sniper Rifles (They aren't exactly the best killstreak builders) Secondary - Any Pistol (preferably, CZ75 (extended mags) (To avoid the use of Scavenger, I always switch my secondary with another persons gun, so I can have 2 primary's! That will ensure you have enough bullets to last long) Lethal - Frag or Semtex Tactical - Concussion Equipment - Motion Sensor (Helps you seek out every enemy around you - unless they have Hacker Pro which they probably won't) Perk 1 - Ghost Pro (very good beginner's perk *not saying you're a noob, lol* I still use it) Perk 2 - Sleight of Hand Pro Perk 3 - Hacker Pro Recomended Killstreak 4 - Counter Spy Plane (Helps you remain stealthy if you aren't using a silenced gun.The enemy will have trouble finding you) 8 - Blackbird (Will help continue your streak) 9/11 - Chopper Gunner or Attack Dogs Once you get better, use 8 - Blackbird 9 - Chopper Gunner 11 - Attack Dogs *****NOTE:***** Ignore the people who say to use Sentries or Care Packages as distractions. I thought the whole point of this was to get high killstreaks, you would need to first get a 5/6 killstreak to get the Care Package/Sentry in order to get 3 more kills for a chopper gunner. Why waste a 5/6 killstreak when you could just camp for a blackbird, then easily get your chopper and dogs? Good Luck!