active shooter

Burke County Sheriff Williams told Newsweek his office was working with state and federal authorities to determine the person responsible for the threat.

Former Newtown superintendent Dr. Joe Erardi told Newsweek he expected "this upcoming school year was going to be the most violent return that America has ever seen."

Lt. Benjamin Blick said that it didn't appear to be a "traditional" active shooter situation since authorities haven't determined whether the shooter or shooters were firing at anyone.

Police rushed to a factory in Springfield, Ohio, after one worker texted her sister to say she was hiding from an active shooter on site.

Sheriff's deputies and firefighters responded to a "possible shooting" today next to the Jacksonville International Airport.

At least six people were killed in the shooting, including one police officer.

"My son's school is holding 4 active shooter drills this year. The only clear impact of these drills is stress, anxiety and confusion on the part of children and families. I would end the drills or make them optional. Let our kids learn the right things," Yang tweeted Monday.

Berkeley County Sheriff Duane Lewis says a suspect is dead and no officers were hurt in the active shooter situation in South Carolina.

Oakland University said using the discs is a last resort but could still cause "quite the distraction."

Multiple officers responded to reports of an active shooter.

Local police responded to reports of an active shooter in the community of Hampstead, North Carolina.

Multiple law enforcement agencies are responding to the scene.

Authorities said the event was not an active shooter situation.

The game is believed to be the work of a "troll, with a history of customer abuse, publishing copyrighted material, and user review manipulation."

"There have been 22 school shootings in the U.S. since the beginning of this year. Why would anybody think it's a good idea?"

The school is located some 30 miles north of Indianapolis.

Santa Fe Police said officers are on the scene at the high school.

After the Parkland, Florida, school shooting, school violence incidents have increased dramatically.

The suspect in Wednesday's shooting at a Florida High School has been identified, according to reports.

The massacre is the worst in Texas's history.

A suspect who was "believed to be involved in the incident" is in custody.

As mass shootings become more common, the FBI has endorsed a training program for first responders—one that recommends civilians keep their guns holstered.

The New York Police Department offered training after two Virginia journalists were killed.