I arrived 20 min before, I broke my collarbone two weeks ago and they helped me. I left my suitcase and mobile phone.
They gave me a number and waited for 40 min and they called me to request the passport and medical exam. She gave me the xray stamp and told me I can't open until I arrive to the US and give it to the border official.
Then I had to wait for another 40 min and another lady called me, she asked what happened to my collarbone and to promise everything under my application was true.