 Authorities in Tennessee say a 12-year-old girl smothered her 8-year-old cousin to death while sleeping. The older girl's been charged with murder. A relative said they had been arguing over an iPhone, and the incident was caught on a security camera. One person's in critical condition after a stabbing on the upper level of Terminal J at Miami International Airport. The suspect's been arrested at the scene by police. There was a disruption in airport service.