 This is a special report from ABC News. Trump rally shooting. I'm Chuck Severson. The former president says his upper right ear was pierced by a bullet. He hit the deck on stage and Secret Service agents swooped in. Law enforcement sources tell ABC News that a Secret Service sniper killed the shooter on a rooftop next to the rally venue in Butler, PA, north of Pittsburgh. Having spoken to a law enforcement agent, ABC's Martha Raddatz now speaks to us.