TRESPASSER!!!
In a strange quirk of fate, CNW 8646, one of the two famed "CNW Twins," the last two CNW units in original, unpatched paint, managed to find its way onto it's longtime rival's tracks, the BNSF, formerly Burlington Northern and Burlington Route prior to that.
Here, 8646 passes under the classic and soon-to-be-removed CB&Q signal bridges at "The Petting Zoo," aka the Rochelle Railroad Park.