Why a Campus Manhunt Takes Time: Early Details "Often Change"

A retired FBI agent is explaining the intensive process behind the search for a reported shooter at Brown University. Police cleared buildings one by one after reports of an armed person on the Ivy League campus in Providence, Rhode Island. No shooter or victims were found, and the "all clear" was given hours later. The expert warns that early information in such fast-moving situations is often unreliable. Initial reports from panicked witnesses can be mistaken. As more witnesses are interviewed and evidence is checked, the facts frequently change. This is why large-scale searches take time, the agent says. Law enforcement must methodically clear every potential hiding place to ensure public safety, even as the details of the threat evolve.