I was surprised to find this battery of NYPD security cameras guarding the quiet terminus of a leafy dead-end street here in Victorian Flatbush. One resident who was out walking his dogs told me they were installed as a response to people hopping the fence and walking along the subway tracks to the nearby station (less than a block from the right edge of this photo), thus avoiding paying the fare. While that explanation didn't seem totally implausible, it also didn't pass the smell test: the two directional cameras were both pointed away from the area where people would be climbing over the fence. In fact, they seemed to be rather conspicuously monitoring a house on the left side of the street. Further research reveals the real reason those cameras are there: that house is occupied by the NYPD's highly decorated Chief of Department!
Awesome detective work. Wonder if the person walking the dog was knowingly telling a fib.