@CNN: These students have developed technology to protect their high schools during a shooting https://t.co/ywTLeqk6Mo https://t.co/a7qR1lHB9G

March 31, 2019 / The Arbiter / CNN

@CNN: These students have developed technology to protect their high schools during a shooting https://t.co/ywTLeqk6Mo https://t.co/a7qR1lHB9G

These students have developed technology to protect their high schools during a shooting https://t.co/ywTLeqk6Mo pic.twitter.com/a7qR1lHB9G

— CNN (@CNN) March 31, 2019

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