A University of Kentucky cheerleader was seriously injured in Rhode Island on Thursday when he fell 44 feet while teaching a gymnastics class. His father credits his training in tumbling with saving his life. Dylan Smith, 19, had been tumbling when "he kinda lost his balance" at the end of a series of moves and landed against a door that had been nailed shut, his father, Hugh Smith, said in a telephone interview. The door, on the fourth or fifth floor of the building, led only to open air. It gave way, and Dylan Smith fell out backward, Hugh Smith said.