Professional yet casual, they asked everything you'd expect in a typical interview - strengths, weaknesses, how can your experiences aid us here - but as this was an internship they were more willing to be casual and talk about college experiences (this was for a position for current college students). Overall it wasn't too bad, a bit of thinking on your feet to match your experiences with their expectations, but reasonable and personable.
I applied in-person. The process took 7 weeks. I interviewed at Diablo (Walnut Creek, CA) in Mar 2014
Interview
Sent an inquiry email for any openings in the company and had a phone interview that lasted over 40 min. Then was scheduled for a one on one interview, lasted an hour and 40 min. and found the experience very engaging. It was exciting to interview with a principal that was so passionate about their company.
Interview questions [1]
Question 1
No really difficult questions. Simply questions that addressed the position that I was interviewing. Very thorough and thought provoking questions that showed high regard for the staff.