BNSF's Marceline sub between Kansas City, MO and Fort Madison, IA. BNSF & NS share tracks for 35 miles east of KC, and UP has trackage rights for plenty of variety. Lots of new "Premium Heritage" units, still a decent amount of Warbonnets, and the trains are moveing right along (mostly!) on the raceway east of KC, then through the scenic wooded hills of northern Missouri. Even caught the 4449 a couple of times, 'course it's a C44-9W! Taped in October, 1999, fall colors.