A child weeps while on the bus leaving The Covenant School, following a mass shooting at the school in Nashville, Tennessee, U.S. March 27, 2023. Nicole Hester/USA Today Network via REUTERS. NO RESALES. NO ARCHIVES. MANDATORY CREDIT

Students from the Covenant School hold hands after getting off a bus to meet their parents at the reunification site following a mass shooting at the school in Nashville, Tennessee, U.S. March 27, 2023. Mark Zaleski/USA Today Network via REUTERS. NO RESALES. NO ARCHIVES. MANDATORY CREDIT

Law enforcement officers and members of the U.S. marshals work at a family reunification center after a mass shooting at the Covenant School in Nashville, Tennessee, U.S. March 27, 2023. REUTERS/Kevin Wurm NO RESALES. NO ARCHIVES

People walk with children beside an emergency vehicle at a family reunification center after a mass shooting at the Covenant School in Nashville, Tennessee, U.S. March 27, 2023. REUTERS/Kevin Wurm NO RESALES. NO ARCHIVES

Mario Dennis, one of the kitchen staff at the Covenant School, sits near a police officer after a shooting at the facility in Nashville, Tennessee, U.S. March 27, 2023. REUTERS/Kevin Wurm NO RESALES. NO ARCHIVES

Children run past an ambulance near the Covenant School after a shooting in Nashville, Tennessee, U.S. March 27, 2023 in a still image from video. WKRN/NewsNation via REUTERS. NO RESALES. NO ARCHIVES MANDATORY CREDIT

A police officer speaks with a woman at a family reunification center after a mass shooting at the Covenant School in Nashville, Tennessee, U.S. March 27, 2023. REUTERS/Kevin Wurm NO RESALES. NO ARCHIVES

Mario Dennis, one of the kitchen staff at the Covenant School, reacts near a police officer after a shooting at the facility in Nashville, Tennessee, U.S. March 27, 2023. REUTERS/Kevin Wurm NO RESALES. NO ARCHIVES