A grad school classmate internally referred me to Booz Allen. About a month later, I received a call about an opportunity. After speaking with a recruiter (really a screening call), I was asked to attend an interview event at the company's head quarters in McLean. At the event, we each had about 10-15 minutes to speak with a couple of individuals that were currently supporting specific contracts. At the end of the event, we were told we would hear back one way or another within a week. I did not hear back for a month, after which I had a phone interview with more specifics about the job I would be performing.