Air traffic over Iowa City is always busy with scores of transcontinental flights. A Variable Omni Range transmitter is located in nearby Hills, Iowa that helps navigate air traffic over what the media calls "fly over" country. On cold air days people who live near the 42N latitude just a few miles north of Iowa City can look to the south and see this kind of traffic. And with apps like FlightAware you can easily identify those aircraft bound from NYC to LA.
