Oh yes, one of my Capitol Limited trips. I had a scanner on that one, and heard the crew talking about the bad locomotive before we even left Washington. After messing around with it for a while, they decided rather than delay the train any further, they'd just take the bad engine to Chicago and deal with it there. So we basically went over the mountains with only one engine. Then at South Bend, the bad engine died so completely, they couldn't even keep dragging it along. Fortunately, there's a little siding a bit west of the station where they could dump the bad engine, but we had to wait around while they called someone from Norfolk Southern to come by with the key to the lock to operate the switch. They allowed us to get off and hang around on the platform, and it was a nice day. Finally, the dumped the bad loco, and we were off. We were only a couple of hours late into Chicago. The point it, though ,that they can run the Capitol Limited over the Sand Patch grade with one engine, but it's probably a good idea to have one or two extra for breakdowns.