No technical questions. They are so below the free market in salary and the clearance process takes so long, they are basically taking anyone with a pulse and a degree. Questions revolved around what I do for fun and typical "Do you play well with others", etc. They described the job, in my case, system engineering. I was offered a job inside 20 minutes.

I had approximately five interviews for my current position. Two phone interviews. In person interview with the supervisor, then a interview with the team leads, the finally was asked to do a presentation on my research. The interview consisted of many technical, personality and personal questions. They are assuring that you have the technical understanding and that you will be a good fit for the position.