A newly unredacted Department of Homeland Security investigation has documented significant failures by the Secret Service in responding to warnings about an assassination attempt against Donald Trump at a campaign rally. The agency received more than 100 radio transmissions alerting personnel to an armed individual positioned on a rooftop before shots were fired, yet failed to implement preventive measures or interrupt the threat despite having advance notice of the danger.

According to the watchdog report, the Secret Service had critical awareness of the threat minutes before the attack occurred, presenting multiple opportunities to detect, contain, or disrupt the incident through established security protocols. The findings underscore a breakdown in emergency response procedures and situational awareness that may have prevented the shooting had standard threat-management procedures been properly executed during the event.