Sunday on “This Week,” co-anchor Martha Raddatz reports on the ground from Parkland, Florida on the deadly high school rampage, with the latest reaction from local officials, families and survivors.
Plus, ABC News Chief Justice Correspondent Pierre Thomas and former FBI Agent and ABC News Contributor Brad Garrett discuss the warning signs on the shooter missed by the FBI.
And former Secretary of Homeland Security Jeh Johnson and former New Jersey Governor and ABC News Contributor Chris Christie discuss the 13 new indictments in the Russia investigation, and what happens next in the Mueller probe.
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