Brown University teaching assistant Joseph Oduro walks Dana Bash through the horrifying moments when a shooter entered his classroom and opened fire on his students.

We've heard about horrific acts of gun violence and active shooter situations in other places, but not here,' mayor of Providence, Rhode Island said.

Moyer was a former student as Stewartville High and graduated in 2024. During his time at Stewartville High School, Moyer was a member of the school’s wresting team. The victim’s identity remains unknown as he is a juvenile. Sheriff Torgerson says the student remains hospitalized in critical but stable condition.

Bystander Ahmed al-Ahmad tackled a gunman during the Hanukkah shooting in Sydney on Sunday, saving lives before being shot twice.

Video shared with ABC News shows the moment a heroic bystander wrestled a gun away from the hands of one of the alleged shooters at Australia's Bondi Beach on Sunday.

Providence Mayor Brett Smiley said that a Brown University student he met at the hospital told him an active shooter drill from high school helped them during the shooting at the school on Saturday.

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As the shooter remained at large, students sheltered in place in classrooms and basements, waiting for the all clear.