Police swarm Iowa high school as active shooter

Pittsburgh synagogue shooter sentenced to death, jury says

Ralph Yarl, teen shot after mistakenly going to the wrong house, talks about recovery

Atlanta active shooter: Multiple people injured in Midtown, police say

Atlanta Police: Suspect at large after multi-victim shooting

Atlanta shooting leaves 1 dead, 4 injured

Atlanta police report 1 dead, several injuries

Active Shooter in Atlanta | Multiple shot, suspect on the loose

Atlanta police search for suspected shooter, ask for public's help

Video Shows Officer Shoot and Kill Unarmed Homeless Man

Aerial footage shows aftermath of Louisville shooting

5 dead after gunman opens fire at Louisville bank

Details emerge about efforts to warn police moments before Nashville school shooting

Bodycam video from Nashville school shooting released as police give new details about attack

Nashville Christian school shooter, Audrey Hale, a former student, identifies as transgender

Nashville school shooting: Bodycam video shows moment attacker was shot dead by police