Add Yahoo as a preferred source to see more of our stories on Google. Apalachee High School teacher Stephen Kreyenbuhl knew something was wrong Wednesday before he heard gunshots. The social studies ...
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Panic buttons and phone alerts: How technology helped prevent further bloodshed at Apalachee
Apalachee High School teacher Stephen Kreyenbuhl knew something was wrong Wednesday before he heard gunshots. The social studies teacher told CNN he was in the middle of a lesson when his smartboard ...
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