MITRE Senior Systems Engineer interview questions

I applied online and was invited by phone to interview. It took about ten days to arrange the interview, to ensure everyone's schedule worked. First I met with HR and the hiring manager. HR had asked me about my salary expectations, and I said $150K. This salary was just a bit more than my salary at Booz Allen. During the one-on-one with the hiring manager he mentioned about four times, four different ways, that Mitre wasn't "about money." The next step in the process was to make a presentation to a panel of interviewers. I presented my graduate thesis. I had previously sent the briefing slides by email. The presentation went very well. The panel was friendly and asked many good questions. I couldn't help noticing that despite their keen interest the hiring manager kept yawning rather dramatically during the presentation. I realized why later. My salary expectation had blown his circuits and he had already made his "no-go" decision before the presentation even began. I wish I had known about GlassDoor at that time. I could have checked salary ranges and seen that Mitre was not the place to go for a competitive salary.