in the wake of the florida school massacre, president trump and the nra are push to go arm teachers as one way to prevent mass shootings. this week a georgia high school teacher was arrested after barricading himself in a classroom and firing a handgun out of a window. cnn's gary tuckman has all the details. >> reporter: for those who support arming school teachers, jesse randall davidson would not be the role model they're looking for. the 53-year-old social studies teacher at dalton high school in north georgia locked himself in his otherwise empty classroom and then is accused of shooting his handgun. >> this is the classroom where the teacher was at. and this is the window where he fired his gun. and it's now boarded up. >> reporter: the school principal said he went to the