The parade of CN trains starts on Saturday at 10:00pm here in Valpo. I think there is one every 15-20 min. Stay up all night and you'll probably see 20 or 25.
your not kid'in i live out here by mill creek, there is sometimes you can hear 3 different set of horns if it's quiet. and if the wind is out of the south it sounds like there on the street out front.