Now the Secret Service admits they did not have an agent in the LE command post before the shooting. How long before is still a question.
Cheatle testified to Congress the standard method of interagency communication was to let each agency retain their own radio comms while the liaisons in the command post would share those alerts so they can be relayed to all agencies.
Apparently there was one agent in the command post who left for some reason. There were supposedly 2 other Secret Service agents assigned there, but couldn't get in due to key card problems?? What?? I guess knocking on the door was not an option.
"My card isn't working."
"My card doesn't work, either."
"Oh, well. I saw a stand selling coffee and donuts."
"Great! Maybe we'll get freebies showing our badges."

Every new detail that comes out just causes more and more questions.