The FBI identified the shooter as a 20-year-old from Bethel Park, Pennsylvania. His employer says he passed a background check for his job.| USA TODAY
One person was killed and two were 'critically injured' in a shooting and assassination attempt at a Trump rally. Here's what we know on the victims.| USA TODAY
Authorities said Corey Comperatore, a Pennsylvania firefighter, was killed in Saturday's shooting. Two others were injured and are in critical condition Monday.| USA TODAY