Federal security guards?

Question

I work next door to a Federal Court House. There are men in dark suits that sit in the foyer area of the court house all the time. I see them everyday because they are housed with the Post Office. Are these guys Federal Marshals? What do they do? I know they carry weapons because I have seen them. Just wondered what their job description would be.

Answer 1

They may be members of the Federal Protective Servivce. They are nothing more than Fed. security guards.

Answer 2

Us marshalls that protect the court house