Support WBURInside the growing industry to defend schools from mass shootings Play09:17Download AudioMeg AndersonWailin WongJulia RitcheyKate ConcannonOctober 15, 2025 ShareJustin Marston, CEO of Campus Guardian Angel, displays one of the company's drones that could be used to deter mass shooters at the National Association of School Resource Officers in Grapevine, Texas, in July 2025. Meg Anderson / NPR (NPR)
