Here we go again...school shooter in St. Louis kills teacher & student

[FakeNoose]

6. From the OP linked article

The shooting was reported after 9 a.m. at South Kingshighway and Arsenal Street. School doors were locked Monday morning and there were seven security workers on site, police said, but they would not indicate how the shooter got inside the building.

David Williams, a math teacher at the school, said the school principal came over the loudspeaker around 9 a.m. and said the code word that indicates a school shooter in the building. Williams heard multiple shots outside his classroom, and one of the windows on the classroom door was shot out. He then heard a man say, "You are all going to (expletive) die."

Quick action by the principal must have saved many lives. The teachers instructed students to close and lock their classroom doors, all part of the school safety regimen. The shooter's gun jammed at one point, and one of the security officers was able to take the suspect down.