remember that first grade teacher shot by a six-year-old? tonight, the teacher s lawyer claiming school officials failed to act. three times, school administration was warned by concerned teachers and employees that the boy had a gun on him. o donnell: heavy tanks to ukraine president biden reverses course, european allies follow suit, promising 80 more of their own leopard tanks. tonight, what the pope is saying about homosexuality, in a new interview. and, the high school class, and lesson, that changed one student s life forever. this is the cbs evening news with norah o donnell, reporting from the nation s capital. o donnell: good evening to our viewers in the west and thank you so much for joining us on this wednesday night. we are learning new details in that federal civil rights investigation into what the u.s. attorney calls the tragic death of tyre nichols. five officers were fired and just tonight cbs news has obtained new police dispatch audio. we ar