Even the officers and receptionists who had been hanging around were gone. In their place, a succession of police officers filed in from the multiple entrances adjoining the lobby. All of them were staring coolly at Hansa, and lined up so as to surround him.
These guys... aren’t your average cops.
Just their bearing and the way they walked was enough to tell him that they had received more than ordinary police training. At the same time, they clearly had not been brainwashed; they were standing in this “cleared-out” space of their own wills.

Fate/Strange Fake: Volume 2, Chapter 3 ("Day 1, Early Dawn")