I have a modern warfare 2 question?

i haven't ever gotton a nuke but i really want one. I'm actually pretty good... just haven't gone for it. so i tried the basic: HARRIERS, CHOPPER GUNNER, and NUKE. Except for two major problems 1. I can't ever get a kill with the explosions the HARRIERS drop. 2. When i get the CHOPPER GUNNER i get about seven or eight kills then get shot down, or can't kill anyone and only get 5 kills. My best kill streak is 26. So i was wondering if any of you guys get nukes with the AC130 or the ATTACK HELICOPTER?? Thanks