Used the SS card center. Arrived early (before they opened) in order to get good parking and to be seen first. Once arriving (8:15 am) there was already a line of about 10 people. Once the office opens (9 am) they let a few people at a time go up to the 2nd floor. Bags get checked and you proceed to a computer to get a number. Because I was there early I was immediately seen. In and back out to the car in 18 min. Highly recommend arriving early and check the SS website to see what documentation you need.