Started with an 1:1 on campus interview with strictly behavior questions like "tell me about a time when your integrity was compromised" or "what qualities do you look for in a supervisor?" A few weeks later I was flown into their headquarters in Reston, Virginia where I went through 3 one on one interviews with people from different departments to see where I best fit in. One department seemed to really like me, but I was told a week later that I was the first alternate for the position.