A gunman police identified as an ex-student opened fire with an AR-15 semiautomatic rifle at Marjory Stoneman Douglas High School in south Florida on Wednesday, killing 17 people and wounding at least 16 others. Police arrested a suspect, and a federal official identified him as Nikolas Cruz, 19, who had been expelled for disciplinary reasons. Panicked students took cover under desks and teachers barricaded classrooms as the gunman fired shot after shot. One man, Jay Golden, said his daughter sent him texts from a locked room where she was hiding with 40 other students and a teacher. "She was crying," Golden said. "I'm freaking out ... You put your kids in school and it's supposed to be a safe place and this stuff happens all the time."
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