29-year-old. a city official announced just yesterday more than a dozen memphis police and fire employees have been administratively charged. joining me right now is nbc news correspondent antonia hylton. what's the significance of this doj investigation. the overall, what are we expected to learn from this new video, 20 hours? >> well, lindsey, on the doj front, what this signals is that their interest, their concern about the culture and practice of policing in memphis is expanding from the initial announcement of their investigation. they're going to be looking at continued patterns of behavior. i think they're also going to be looking at the culture of some of these teams, like the scorpion unit, which the five officers who are now facing criminal charges who were five of the several people who have been terminated, the unit they were all involved in. i think what we're going to see later this afternoon, additional angles and additional insight into what happened that night. i don't think it's going to change the fundamentals of what we know already, which was this was a vicious beating.

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