text:  Well, I spoke with former Secret Service Director William Basham. He says it could have happened from the very start of planning. That is, an advance agent for the Secret Service is charged with standing at that podium where Trump was standing and get a full 360-degree view of what needs to be covered. And a decision was made that that roof should not be directly covered by the Secret Service. And he says this is part of a larger series of breakdowns that continued.