WGN's Ryan Burrow looks at security upgrades at Chicago's Lollapalooza.  He speaks with Chad Green, creator of an AI-based gun detection system for Omnilert (https://www.omnilert.com/), designed to make schools safer.  And he talks with William Philp, a parent of two Apalachee High School students, who has been fighting for tighter school security following the 2024 [...]

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