Switching power, local power, and origination/protection power.

A pair of Union Pacific EMD SD70Ms grind away while pulling a heavy train loaded with ballast eastbound through Agate, Colorado, on the morning of October 20, 2013. Apparently as of mid-April 2020... (more)

A pair of EMD SD70Ms pulls an eastbound Herzog ballast train east of Cedar Point, Colorado, on Union Pacific’s Limon Subdivision, also known as the “KP” for its Kansas Pacific heritage. The ... (more)

UP 4231 leads a train of hoppers across the bridge over Cienega Creek.

Northbound crossing over from track one to two and kicking up a bit of dust as the lead units hit the abandoned intersecting rails of CSX's Gainesville Midland sub.