Whatever you do, don't bring any cameras if your carry a purse or some kind of bag. I always carry a mini dv/camera in my purse (everyday), went sailing thru the checkpoint/X-ray machine in the morning. After lunch, the officer wanted to know what "electronics" I had. netbook, cell phone (with a camera in it!) and mini dv. I was told I couldn't bring a camera into the courthouse, to maybe leave it across the street at the camera shop. I don't know those folks in the camera shop!
Naturally, not wanting to be disrespectful, I didn't point out that practically everyone in the building had a cell phone WITH A CAMERA IN IT.
I ditched said camera several blocks away with a co-worker. What a pain in the tush.