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Initially I thought what if the fire alarm had been pulled or what if the sprinkler system could have set off to make it more difficult for the shooter. This got me thinking what about fogging system to end visibility. Next would be a lockdown capability of hardened classroom doors.
Other thoughts included a piercing sonic alarm or blinding flash system to render it more difficult to find and shoot that could be activated when a gunshot is heard.
Other thoughts included a piercing sonic alarm or blinding flash system to render it more difficult to find and shoot that could be activated when a gunshot is heard.