IDK what year, could've been last, a summer since Q showed, I heard the roar of choppers, sounded like 2 at 1st.  It was night, pitch black where I live, so I couldn't see anything.  There were no lights on them, and they were low, my house was shaking like windows were going to shatter.  Then a couple more, in the distance, it lasted a few (IDK) minutes.  We thought our house was going to crumble, it was shaking so bad. I've lived here 20+ years and only once it happens...my mom was here when they came by and she freaked out thinking we were going to be bombed.  There were no lights to even begin to capture pictures either, so dang, but my democrat mom would say yes it happened. We counted 38-60,  my brother counted more, just because of the level of shaking we felt as how many were passing over, and each as low as the one before.  All heading in the direction of Chicago.