People tend to check in during these times:
One of the ten largest local police agencies in the United States, the MPDC is the primary law enforcement agency for the District of Columbia.
There's no sign on the building that says police.
If going for fingerprinting or background check, be prepared to run up and down the escalators and take a number to pay the cashier. Smh. Straight MVA style.
Great place to camp if you are homeless. It may be hard to find a spot, though, because most of them are usually occupied.
Look carefully around the grounds of this building for hints about the effectiveness of Metro Police.