not so sure about this run, hide, fight message when confronted by a deadly incident; run - sure, hide - absolutely, but fight? are you expecting children, untrained adults to go into conflict with people armed and trying to kill them? surely this is best left to the appropriately trained police and other forces. the uk has the message; run, hide, tell which seem far more sensible and practical.
https://www.npcc.police.uk/NPCCBusinessAreas/WeaponAttacksStaySafe.aspx