Extras

    Video thumbnail: PBS NewsHour Preparing for the worst, 20 years after Columbine

    PBS NewsHour

    Preparing for the worst, 20 years after Columbine

    Preparing for the worst, 20 years after Columbine

    Preparing for the worst, 20 years after Columbine

    Video thumbnail: PBS NewsHour A 10-year-old on what happens in an active shooter drill

    PBS NewsHour

    A 10-year-old on what happens in an active shooter drill

    A 10-year-old on what happens in an active shooter drill

    A 10-year-old on what happens in an active shooter drill

    Video thumbnail: PBS NewsHour Police identify Texas gunman in attack that left 7 dead

    PBS NewsHour

    Police identify Texas gunman in attack that left 7 dead

    Police identify Texas gunman in attack that left 7 dead

    Police identify Texas gunman in attack that left 7 dead

    Video thumbnail: PBS NewsHour Day after shooting, Odessa is still an active crime scene

    PBS NewsHour

    Day after shooting, Odessa is still an active crime scene

    Day after shooting, Odessa is still an active crime scene

    Day after shooting, Odessa is still an active crime scene

    Video thumbnail: PBS NewsHour Floridians prepare for Dorian as the hurricane shifts north

    PBS NewsHour

    Floridians prepare for Dorian as the hurricane shifts north

    Floridians prepare for Dorian as the hurricane shifts north

    Floridians prepare for Dorian as the hurricane shifts north

    Video thumbnail: PBS NewsHour Slow-moving Hurricane Dorian heads toward southeast U.S.

    PBS NewsHour

    Slow-moving Hurricane Dorian heads toward southeast U.S.

    Slow-moving Hurricane Dorian heads toward southeast U.S.

    Slow-moving Hurricane Dorian heads toward southeast U.S.