Maybe, just maybe...because this is so close to me I have a different perspective about these "drills."
These kids went into lockdown and then were transported later away from the high school for parents to pick-up away from the scene. Teachers, at least one, is identified as having a bullet proof vest available. Many accounts did report that the 'drill training' helped things go smoothly during and after the initial shooting.
Chardon is not an inner city school. The Chardon community is considered one the highly desirable locations to live.
I don’t think you have to take kids miles away for a boiler explosion. If its one or 2 shooters in school again you’re not busing but just leaving the building and getting as far away as possible if possible. They are preparing for something else. Dirty bomb. Train derailment with a toxic load which could also be terror related. Whatever scenario or scenario’s it’s terror related.