Video: Shooter seen by some attendees at least one minute before Trump was shot

New video shows some attendees at the Trump rally noticed the gunman on the roof at least one minute before the shooting. The video shows what appears to be at least one law enforcement officer walking around the building. A spokesman for the United States Secret Service told CNN the agency did not personally sweep the building where an attempted assassin shot former President Donald Trump, but instead leaned on local law enforcement to conduct security at that location. #CNN #News