FULL TITLE: Moment United Airlines worker pushed a grandfather, 71, to the GROUND and knocked him unconscious in the middle of the Houston airport Just two months after witnesses recorded the moment a 69-year-old man was dragged off a United Airlines flight to make room for crew, a new video is threatening to embroil the airline in scandal once again. The nearly three-minute video, obtained by KPRC, shows a United Airlines customer service representative pushing a 71-year-old man to the ground in front of the ticket counter and then leaving him to lay on the ground unconscious. In fact, not...