The squeal of 6-axle flanges from a pair of U-Boats announce the passing of pushers down-bound, returning to Altoona for their next push westbound up the curve. U25C 6502 and 6536 a U-30C.
Against a dramatic late winter sky, CR U23B 2721 charges westbound through the compound curves east of Silver Creek with a mixed manifest out of Buffalo, NY.
Shoving hard on the tail-end CR 6341 and SD45-2 6655 are knuckled onto a CR bay-window caboose, westbound up Horseshoe Curve.