The last plane I crashed was more than twenty years ago, in fact I did not crash but its wing disintegrated in the air when I was doing extreme maneuvers with a Calypso gas plane, ws 60" or more and that was a sight.
My favourite 2m pattern plane
Arm the teachers and others.
A shooter might think twice about attacking the innocent if everyone is armed.
By the time the drone team shows up with a drone, the problem will be resolved.
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OEM BLADES ARE OK ,but I highly recomend MASTER AIRSCREW (4 drones and five years) NEVER AN ISSUE
IN reading everyone elses response looks like all of us feel the same way MASTER AIRSCREW RULES 100 %