 The shooter was killed by a Secret Service sniper. He's identified as a 20-year-old man from western Pennsylvania. Law enforcement's concerned there are explosives in his vehicle. They're working to make sure the area's safe. One person was killed in the shooting. He's been identified as 50-year-old volunteer fire chief Corey Comperatore. Two others were hurt. President Biden and Vice President Kamala Harris are being briefed on the investigation into the shooting. This is ABC News. The Republican National Convention will kick off tomorrow as scheduled in Milwaukee.