As other elementary schools across the country were preparing for the new school year by cleaning classrooms and training teachers, Hermosa Elementary, in Artesia, New Mexico was installing a network of wireless microphones that could pick up the specific concussive audio signature of gunfire. Placed high in classrooms and hallways, the golf-ball-sized devices can alert authorities to the sound and location of gunshots, reportedly within 20 seconds of firing. They can also identify make and model of guns, and automatically lock doors and sound alarms throughout the campus.

(TNS) - When Aledo and Joshua students head back to class, they’ll find police officers on their campus full time.

Weatherford students will know that some teachers and school employees likely are carrying concealed handguns.

And Fort Worth students will know police are monitoring school safety cameras in real time — and that school nurses are getting trained to treat victims of active shooters.