Security Note
I've had occasion to walk past DARPA's new headquarters twice in the past month, and both times, I found myself wondering what organization was located there, because if they have any signs identifying the building, they aren't very visible. I'm guessing that they did that for security reasons. Unfortunately, security doesn't really work that way. I didn't find myself completely wondering about it - all the people in uniform walking in and out, and the military plaques on the walls visible from the street made it clear that it was DOD. And two seconds with Google when I got home this afternoon told me that it was DARPA's new headquarters. So not putting DARPA on a sign in front of the building doesn't make sense from an operational security standpoint.
Of course, this is the same agency that, when they were in their old HQ, would harass people taking pictures of their unmarked building.
Of course, this is the same agency that, when they were in their old HQ, would harass people taking pictures of their unmarked building.