by doepack
FWIW, doubleheading has been occurring less often on UP as well, especially on the west line, where everything I've seen has been solo lately; although I did see UP/NW 641 at OTC today with its usual extra unit. But sometimes I wonder if a protect unit is really needed on UP/W, it shouldn't be a big deal to fire up something from either Proviso or W. Chicago for a rescue mission in case an F40 goes belly-up on the Geneva sub...
--Dorian--