ICBM’s are loud — very loud. Someone would have heard it.
Depends which way the wind is blowing. I got to see a Shuttle launch on the base from five miles away. I was expecting a huge roar. I barely heard anything. I since seen others from within Melbourne (a lot more than five miles away). None was ever really loud, but at least some were louder than that one I saw on base.
ML/NJ