The fatal school shooting in Georgia this week was a tragic reminder of the ever-present threat of violence that hangs over American schools. Not that anyone needs reminding. In Louisiana, many schools have been reviewing safety plans and running lockdown drills since the new school year began. In Caddo Parish last week, schools were practicing how to respond to an active shooter when a student sitting by the door in Ashley Samuel’s fifth-grade classroom observed flatly that he would likely be the first person shot.