 Senator John Thune also says Cheadle should step aside after a private congressional briefing on the assassination attempt. Congressman Dusty Johnson says the priority now has to be protection of key figures. You know, there'll be plenty of time to fire anybody who needs to be fired. The thing we have to take care of right now is making sure that we're keeping all of the men and women that the Secret Service is supposed to be protecting safe, but keeping them safe.