It also partly depends on what kind of a day the Marshalls who are doing security at the building door are having.

I was called for duty in the Wyoming Federal court last spring. I was never actually chosen to serve (cops wife!) but most of the Federal Marshalls got to the point that they recognized me when I went through the screening and detector. It got to the point that I didn't even have to show my picture ID. On days when there was a relief Officer, tho, different story.

I used to have a real but DE PRIMED .38 cartridge on my key ring. NO powder either. The primer had been removed to attach the chain for the chain. (Ok, this was a family joke...I had been really really sick and was asking everybody if they had the 'bullet with my name on it' so the daughter got me one and had my name put on it).

All but ONE time I remembered to take it off and leave it in the car. Then I did the Oops. Tossed my keys in the bin for the Xray...and suddenly remembered the damn bullet...thank GOD there wasn't a newbie on duty that day. The Marshall just laughed and said, Well, it's obviously not too functional, but he kept my keys anyway.

Be safe and just take a book. I was also told that any item NOT approved 'could' be confiscated.