Authorities say a 16-year-old girl was flown to U.T. Medical Center after she and two children were struck by a boat propeller on Norris Lake today. TWRA officials said the teen, along with a 6- and 8-year-old, fell off an inner tube being towed by a boat. When the boat circled back to pick them up, they were struck by the propeller near the White Bridge Access area. Officials said everyone involved was from Ohio. The younger children were taken to Lafollette Medical Center for treatment of injuries.