Structured interview with situational, action, outcome format. Pretty standard set of questions in a more formal setting. Several people participated on the panel with the manager. Some limited time left at the end to ask questions.

I had 2 separate interview phases. Phase 1: This was an on campus interview. There were 2-3 interviewers whom asked behavior based questions. I only had to answer 4 of them and then I had my chance to ask questions to them. We were able to chose 3 of many different locations to do the internship if selected. Phase 2: The company actually flew us out to the place that we had been picked to do our summer internship. Here we had 4 different interviews/30 min each. I wish we had more time with them. It was very quick and easy though. You already have the internship at this time, you are just selecting which manager you want to work for.