30 feet diameter silver disc no soundbright blue sky no clouds silver disc still not moving about 1000 feet near moutain me mother father wife and sister on pontoon boat got close to the disc and suddenly it moves about 300 feet to the right and stops very shakey like a magnet (no sound) then moves back to first position stops shakey no very stable then moves again half way towards same place stops shifts and takes off into space a blink of a eye most amazing experience ever lived this is a antigravital and magnetic space craft never to be forgotten