On Wednesday morning, Christina Caron dropped her children off at school in Bangor. Watching them walk through the doors, Caron said she was reminded that the parents of 19 Uvalde, Texas, children did the same a day earlier, not knowing they would never see their children alive again. The Tuesday shooting that killed 19 children and two teachers at a Texas elementary school left parents elsewhere struggling to help their children make sense of the deadliest instance of school violence in a decade.