My resume was submitted by a former colleague of mine. The phone interview was with the Section Manager and a Senior Engineering Fellow, whom I have met year earlier. They asked about my work at the time... very general and basic... For the on-site interview, I was the one doing most of the talking because they didn't want to or couldn't share anything that they were doing with me... Everyone I spoke with were nice. The environment was pretty relaxed. My advice for others: be confident and take charge of the interview...