active shooter

Ahmad Al Aliwi Alissa, 21, is accused of fatally shooting 10 people, including a police officer, at a King Soopers store in Boulder.
They're unproven and traumatizing, particularly during COVID-19 when students and teachers already confront so much, the physicians say.
Some of these trainings do more harm than good, according to the American Federation of Teachers and National Education Association.
The ALICE Training Institute wants teachers and students to confront gunmen. There’s little evidence its approach works.
Two suspected gunmen and three bystanders were killed inside a kosher market during an hourslong shootout in the New Jersey city, officials said.
The active-duty Navy sailor shot three Defense Department civilian workers, according to Joint Base Pearl Harbor-Hickam in Hawaii, which was on lockdown for hours.
The 16-year-old gunman, a student at the school, died Friday after shooting himself in the head, according to officials.
There is a fine line between teaching kids to make good decisions and forcing them to think — and worry — like tiny grown-ups.
Maurice Hill, 36, allegedly injured six officers during an hours-long standoff with police in North Philadelphia.
A suspect in the massacre in El Paso has been taken into custody, according to police.