It was a behavioral competency interview, they called it Full Spectrum Leadership. It was a 1 hour interview, with a panel of 3 managers and HR rep took turns asking 13 questions. You have to use the STAR method (describe the Task, Action, Result). They score you on the quality of your answers and whether you hit all of the STAR. I was allowed to bring notes, however, if you write something down during the interview, you're not allowed to leave the room with it (I think it's to prevent people from sharing the questions). The interviewers were very nice. They asked follow-up questions if they needed clarification.