Booz Allen Hamilton interview questions

An external recruiter randomly called me. I didn't even know Booz Allen existed. At the time I was at Dept. of Homeland Security and was misserable. I went in to interview and there were two guys and they were very sharp. They asked me a couple subject matter questions that were easy. About a week later, they gave me an offer with more than I asked for.

They were really slow with their processing. I don't understand why I didn't get the job considering I was an excellent candidate. They picked the other man over me because he had a few more months of experience over me. They need to give new chances to new employees.