The courtroom must have been stuffy with all those marshals and guards all watching everyone. Could you breathe will all that.
Your tax dollars at work.
I'm thinking of a big drug trafficking trial in particular. The clerk set up metal detectors at the front and side doors to the courtroom. IIRC, there were six defendants. Each one was assigned two marshals - one for close contact, one to keep an eye on the defendant from a distance. No spectators were allowed in the courtroom - just the court staff, the U.S. Attorneys, the defendants and their lawyers. Trial lasted for eight weeks, we were glad to see the whole lot of them go. I honestly don't remember who got convicted and who didn't . . .
My judge (now retired) had a .44 Magnum under the bench and several other firearms in his office.