It honestly happened so quickly that there's not a great deal to talk about. I seemed to be one of the only ones there as there was no queue to wait in! Just straight into the airport style security where I went through there no problem. The guard asked me to drink some of my water, I'm guessing to prove it's not poisoned or something?
Then I headed into the reception, they put a sticker on my letter and told me to go up to the first floor where another lady directed me towards the smaller waiting area off from the main room. I sat down for less than 30 seconds before my number was called. Handed over my paperwork, did the fingerprints. He took the paystubs as well as the W2 and affidavit. Then I was told to sat back down.