Teacher's invention won't stop shootings but can keep students safer

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Teacher's invention won't stop shootings but can keep students safer

Teacher's invention won't stop shootings but can keep students safer
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Teacher's invention won't stop shootings but can keep students safer

by WTAE - Pittsburgh Videos 2:05 mins

A former school teacher and security director says his invention won't stop school shootings, but it will help keep students safer.

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