We generally don't have a problem with shootings.
However last year my 17yo daughter called me on her cell phone, "We're in lockdown and don't know why." I called police, kept getting answering machine or shuffled to Lt's answering machine. Called school, no answer. Finally called newspaper who hadn't been really paying attention to the police scanner. Boy, they can move fast.
I called my daughter back to give updates when I had them. Someone had been shot. Cell phones aren't allowed at their school, but the teacher too was grateful for my daughter's updates.
A while later a student was called out of my daughter's classroom. My daughter thought it was cuz the school thought he might have some answers.
It was cuz he was the shooter - who'd been listening to my daughter giving all the updates.
Turned out he'd brought a gun to school, left it in his backpack, it fell off a bench, shot his best friend, who didn't know he'd been shot, but his shoulder hurt, so he went to the nurse, then the shooter dumped the gun when alerted to going to lockdown.
Later that year my daughter had a day at the newspaper for an english assignment. The crime reporter discovered and exclaimed, "That was your mom that called us?!?" Then he and other reporters were verrrry amenable to helping her with another issue - publicity about our robotics' team.