If you have any school-aged children in your life, you know that lockdown and active shooter drills have become a routine part of their school experience. These drills now take place in 95 percent of American schools. What you’re about to hear is a collaboration between Slate and The Trace, a nonprofit newsroom covering gun violence in the United States. It’s an audio project featuring firsthand accounts from kids of all ages about what it’s like to go through these drills. We hear a lot about school shootings, but we’re only starting to have a larger conversation about how they affect even those kids who may never go through one.  You can hear more from the students at slate.com/lockdown. Learn more about your ad choices. Visit megaphone.fm/adchoices