[Throwawayaerlei]

Useless unless you also have the right to bear them into potential death traps like a theater.

Very needed when like in Bataclan the authorities take a secure the parameter and wait approach, like for Columbine and the Pulse a gay nightclub in Orlando, Florida massacres. Or when the closest authorities cower in fear as in the Stoneman high school shooting (that was addressed by police units from further away).