 Stay with KRMG for the latest updates. Crystal Kelly, 1023 KRMG, Tulsa's News and Talk. Team coverage, retired Tulsa Police Sergeant Dave Walker is familiar with presidential details. He has experience. He says the roof where the gunman, Thomas Matthew Crooks, shot former President Trump should have been better covered by the Secret Service. You would stand where the podium is and you would look. And if there's a line of sight, that should be one of our guys on the roof. Not a bad guy with a rifle that's going to take somebody out and kill people.