No, I did not have to have this type of surgery as this great and unexpected surprise happened right before my eyes. :)
A three-way meet takes place as Metra heads east back to Chicago. Right before he takes off, a UP manifest train heads westbound with a run-of-the-mill SD70M in the lead. Just after the Metra cleared, an eastbound stack train passed the westbound manifest, unfortunately on the other side, so you can't see it too well. I didn't get to see his power. Still, awesome meet!