This is the reason why we don't make any of the show frequencies public during Airventure... or most other Air Shows for that matter! Not only to avoid "accidental" transmissions but the deliberate ones as well... and yes, there HAVE been some deliberate "Airwave Incursions"!
Not trying to be a jerk about this... but an irresponsible individual with a hand-held radio can really ruin things for the rest of the show. So let me suggest that if you DO want to listen in, please use your scanners, and NOT your hand-held radios to do so. If you must use a radio, remember to use it responsibly and watch that transmit key!
McGyver