Detective breaks down in trial of deputy who didn't stop Parkland shooter.

The homicide detective who led the investigation into the 2018 Parkland high school massacre wept on the witness stand, saying the school’s assigned deputy could have prevented the deaths of some of the 17 people murdered if he had charged into a building instead of taking cover. Deputy Scot Peterson, the school’s assigned deputy, stayed outside the building where the shootings happened, taking cover nearby. Prosecutors say he is guilty of felony child neglect for failing to protect the juvenile students killed and seriously wounded after he arrived at the building, about two minutes into the massacre. Peterson, 60, is the first U.S. law enforcement officer ever charged for an alleged failure to act during a school shooting.