Thunderbirds operating in and out of the Gary, Indiana airport for the 2009 Chicago Air and Water Show at North Avenue beach this weekend. So far, we've confirmed for the Thunderbirds the following: F1 - 141.075 (AM) F2 - 139.800 (AM) UHF: 235.250 322.950 has been quiet, so far. Happy Scanning! - Ted and the CARMA Airshow Team