The interview process took about 3.5 to 4 hours. I saw three waves of people: first wave was an HR specialist; second wave was the immediate supervisor, a subject matter expert, and another supervisor; third wave would be the immediate group with whom I would work. I arrived 15 minutes early, but needed to wait because several people involved in the interview were in a meeting that went over. This gave me time to catch my breath and chat with the security officer at the front desk. The interview took place in a conference room and the groups would switch out when it was their turn. I did not get a tour of the building, but I forgot to ask at the end of the interview.