Just a word of warning, if you live in the Boston area and are looking for an interview soon, the current wait is until mid April unless you find a cancellation. I had originally had mine scheduled there but travel changed. I had to call the office as it was a last minute cancellation and the lady I talked to said the demand for Boston is out of control as they are the only one in the area even after they went to 15 minute scheduling.

I got mine rescheduled to BWI for 11/30 which it looks like I am the only one scheduled for the day right now.