Shootings bring anxiety and more training for school safety

Georgia's schools have beefed up security in the wake of the growing number of mass shootings on campuses and other public places.

Schools are offering more training for teachers, upping the number of police officers on campus, and using increasingly advanced surveillance cameras and technology to keep out those intent on inflicting harm, among other efforts.

The changes come at a time of growing anxiety among educators and students, who are being asked to go to greater lengths to protect themselves against shooters – fighting back against would-be attackers and buying security devices meant to keep gunmen out of classrooms.