This was one of my most enjoyable interviewing experiences to date! The on site interview consisted of one-on-one interviews with different research scientists and coordinators, all of whom were friendly, welcoming, enthusiastic and helpful. Most of the interviews were more conversational--with interviewers wanting to know more about my background, resume and interests. Large portions of the interview were set aside for me to ask questions, so make sure you do your homework! They were excited when I had questions for them, because they're looking for passionate, intelligent and eloquent people who really want to help people.