I believe there is a new show on the military channel called "Military secrets" or something like that. On the clip I saw for it they showed what looked exactly like the sterotypical "flying saucer". I'm sure over the years the military has made many what they thought were secret test flights that probably got seen by others who thought they were from another planet. Hard, idisputable evidence is what will be needed to really convince most people. And thats just not available to manys satisfaction as this time.