I can kill with vehicles, choppers, and of course guns. But anything to do with jets, I don't know what is going wrong. I'm not sure what the trick is for a stationary AA gun but I can't seem to hit a jet no matter how close it is. As for when actually flying, I can once in a while hit an opposing jet with my machine gun, but it never blows up, yet other people have hit me for no more than a second and I'm instantly dead. Any tips or recomendations?