The threat of a mass shooting has school districts across the country turning to various technologies in hopes of protecting their students.
School are now using products like gunshot detection systems that identify where shots are fired and apps like Share 9-1-1 that allow teachers to report attacks and connect with police.
Erik Endress is the CEO and Co-founder of the Share-9-1-1 app. He spoke with KCBS Radio's Rebecca Corral.