Today I launch my Q500 4k bird in the air at Independence Grove, Libertyville Ilinois, I was on my second battery load winding down my flight when a Ranger police came and stated that I can not fly a drone on any forest preserved area. He said I have to get a permit and fly on their designated flying area for the model plane, I told him that drone is not model plane. It is for areal photography use. That spoils my fun. Did any one of encounter this problem. in your state. Any input out there..