80% of active shooters happen somewhere other than schools. Without a systematic, coordinated approach, we invite chaos which is exactly what showing up individually, rushing in to every entrance, uniform, non uniform times ever how many arrive on scene. Since over 60% are over with before we even arrive, seems methodical is much better than speed without a coordinated plan. Not to mention the huge communication problems with different jurisdictions not on the same frequencies Be interesting to see if speed trumps a systematic approach when these happen in the future.