Bloatflies and Mr. Gutsy's just hover, they don't fly. Vertibirds were the only flying thing there is. Well, I know the 2D environment of Fallout 1 and 2 won't allow use of flight (unless they did it X-Com style with the Flying Suits), but F3 would have been perfect since it's 3D. Are jetpacks and flying enemies introduced in NV?

Jazzpacks you mean.

/superman fist into the sky

hmm i would belive attack buzzards or something but not sure

http://fallout.wikia.com/wiki/Cazador