I'm in the south suburbs of Chicago right now and I just saw 2 military chinook helicopters heading North West toward O'Hare. I couldn't find them on my radio scanner so I was wondering, anyone have an idea of where they are heading? I searched the aircraft and military bands in my PRO-163 and didnt find anything yet. I usually don't see these at 11:30am any one have the frequencies for them? I've seen them earlier this year too in the summer.