Three interviews scheduled ahead of time with a list of names and titles given in advance. At the end of the third interview I was told there would be a fourth and final interview. Each interview lasted about an hour and it helped to have some snacks and soda throughout the day for stamina. Lot's of general program manager'ish type questions and it helped that I read The Zen of Program Management in advance to answer these. Not too many logic or case study type questions.