 At 6 p.m., and I want to read this to you, the officer sees Crooks, that's Thomas Crooks the shooter, return to the building with a backpack. He issues more warnings to command. Crooks sits down, begins looking at his phone. Then Crooks is seen pulling out his range finder to gauge the distance between where he was and Trump's podium. And the officer is reporting all of this in real time. Two minutes later, Trump walks out onto the stage.