Didn't actually see it. Other people in the office saw it. Looking top-down, they couldn't tell what color the body was...
Last weekend was the first time I was helicopters on what seemed like "patrol" flights. It was quite comforting.
2 blue choppers circling buildings around the Grant Park and Navy Pier area. They would hover around the buildings and even looked like they hovered over the rooftops.
They made their rounds and came buzzing back about 2 hours later and repeated their patrol. This was Friday evening. On Saturday, they were out again several times. :-)