One of the worst school shootings in history, still begging for answers and accountability. cnn has learned that one of the texas state troopers under investigation for her actions at robb elementary has a new job as a newly hired school police officer at uvalde elementary. trusted with protecting some of the same students who survived the massacre. parents of children killed at rob where the first to notice the officer on campus. recognizing her from body camera footage of the shooting. a four-year veteran of the texas department of public safety, was one of the first law enforcement officers...