These F-16's are probably coming from just a couple of miles from my house. I live very close to the end of Runway-24 at Sprinfield OH Beckley Field. These are coming from the Springfield ANG-Base.
They fly down to your area and practice some low level combat senarios. Air-to-air refueling is also practiced in various areas, as well as many night flights to various areas for combat simulation. I am sure a lot of the simulation is air-to-air combat and air-to-ground. As could be expected, low-population areas are needed for these kinds of training missions.
I believe they also perform some live bombing over in Southern Indiana, at the Army base there.
Lately, the SANG base has been hosting a wing of F-16's from Dutch Air Force. SANG was one of the casualties of a BRAC (base realignment & closure) and is either losing or lost its active wing of F-16's. It did get a slight reprive and is currently a training wing for all Ohio F-16's and trains for contract-countries our government has "deals" with, to provide F-16 training.
Denny Seifried