We saw a big, unmarked, Sikorsky helicopter, almost identical to this one, sitting behind the Bolingbrook Post Office yesterday. There were four police cars very precisely placed in front of, behind, and to the left and right of it at about 50 yards. A group of about 10 officers where standing in front of it along with an older out of uniform guy sitting on its nose. A firetruck and an paramedics squad were in the parking lot. Nothing was happening. Very strange.