At a Pennsylvania rally, Donald Trump was attacked by a gunman identified as Thomas Matthew Crooks, 20, from Bethel Park. Armed with an AR-style rifle, Crooks was killed by Secret Service agents after firing multiple shots from a rooftop. Witnesses Ben Macer and Ryan Knight saw Crooks moving across rooftops to target Trump. The incident left one attendee dead and two others critically injured. Witnesses described chaos as shots rang out, highlighting security lapses during the event.