 And they knew he was coming and knew who he was. And then he gets in through the perimeters and into the police command center and on the roof. And then he sits there for 26 minutes. I mean, come on. The parents of Donald Trump's would-be assassin, Thomas Matthew Crooks, called the cops to say he was missing before the shooting. A bombshell new report claims. It follows another stunning development that the 20-year-old gunman was at the former president's rally three hours before opening fire.