Took a long time to get the interview. Once I got it, was a panel with very specific closed ended questions. There really was no small talk. The people are really regulated as to what they can do throughout the interview.
The process took 1 day. I interviewed at US Department of Defense (Washington, DC) in Mar 2010
Interview
You arrive with a group of people interviewing for the same job and your luck of the day determines what time you'll get to leave. Of course for security reasons absolutely no electronics are allowed, so bring a book. Questions were your basic interview questions.
Interview questions [1]
Question 1
Describe a time where you took a leadership position