I had 3 interviews. The first was a behavioral over the phone and it was like any behavioral, just look up "common behavioral interview questions" and you will find them. Then after that I was told that I made it to the next round. I was scheduled for 2 more interviews and they were supposed to be case interviews. The first case interview was through Hirevue and they told me about a federal agency that had a business problem that needed to be fixed through a technological solution. If you understand the systems development life cycle and how important users and communication are then you should do fine. Also understand the difference between what federal consulting should look like and what commercial consulting should look like. I was supposed to have a second case interview over the phone a few minutes after the first but the interviewer decided to just do another behavioral and that threw me off a bit but we ended up having a nice conversation. I would say focus on having really good questions to ask after the interviews...things to make you stand out and things to really show your interest and knowledge in the area. For case interviews, write down the information they tell you and then look over it, read it back to them, and ask them if you missed anything.