I had two separate, 30-minute interviews with two different employees. Both interviewers were friendly and professional, since it was an internship interview the questions they asked were all behavioral questions such as "tell me about a time when you had to take a leadership role". The first interviewer asked me a lot of questions like that, while the second interviewer really just asked me questions about my hobbies, personality and we had a pretty casual conversation for the duration of the interview, probably to see how well I got along with others.