Radio failures hampered police response during Parkland shooting, defense argues

The Florida deputy on trial for failing to act during the Parkland school massacre claims that the radio system widely known to work poorly in that region severely hampered him and his colleagues.
The dispatcher who coordinated the response testified that it was known to dispatchers, deputies, and administrators that the county's radio system often failed in Parkland.
The radio system repeatedly failed as more and more deputies tried to radio information as they arrived at the suburban Fort Lauderdale school where Peterson was the on-campus deputy.
The defense's primary argument is that the gunshots’ echo made it impossible for Peterson to pinpoint the shooter and that the radio system's failure made it impossible for him to hear what most arriving deputies were seeing and hearing.
Peterson's attorney rested his case with Peterson choosing not to testify, and closing arguments are scheduled for Monday.