People with cold blooded are easily killed in certain maps even if they are in buildings.... This is especially true with the Chopper Gunner... I shoot through the windows
And yea most people dont think about the killcam too often... If you get killed by Chopper/AC130 definitely search the killcam for the location then switch to the cold blooded class and sneak on over there.
Next time I'm on Im gonna run with my stopping power class, its easier for me to get multi kills with it...