Colonel, I've been an professional aviator for over forty years now, but no, in all that time I have never seen a pig fly. My basic understanding there is that their lift to drag ratio is quite low, they have very little inherent stability in all three axes, as a whole they seem to have little desire to work on that task, and they have no way of providing internally derived thrust, so they therefore can not fly. I never made it past the rank of Captain in the Air Force though, so I'd definitely defer to your greater standing on this question.