The annual Northern Illinois Air Show in Waukegan. Gates open at 9.30, air show starts at noon. Admission is $15 per person, at the gate. There's going to be an aerobatic tactical demonstration of the A-10 Thunderbolt-II !!! Don't know if they'll shoot the gun, but one can hope. GAU-8 Avenger - 30 mm 7-barrel Gatling cannon. 3,900 rounds per minute of depleted uranium death from on high. Accept no substitute.
For all air show details, parking, admissions info, etc., go to their web page: http://www.northernillinoisairshow.com/
RSVPs are not needed for this event but can be used for entry into your personal calendar.