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Even the "lucky" kids who survived the fatal Robb Elementary School massacre last year have been changed forever. In a recent interview with PEOPLE, Briana Ruiz, 33, said that her son Daniel "Tres" Ruiz Garza, 10, "lives with his scars…

It has been analyzing 13,000 pieces of evidence related to the shooting, and has conducted more than 200 interviews with witnesses, law enforcement officials, and other first responders, the department said on Wednesday. The Justice…