SeattleRailFan's video: BNSF and UP trains in Tukwila WA 3-24-2015

I'm trackside today in Tukwila, WA. The UP main is closest to me, the BNSF mainlines are the ones farther away. Listening to scanner traffic, I'm expecting a northbound BNSF train any minute. A UP train is coming southbound at some point as well. First up is BNSF 4551 (C44-9W) leading a northbound grain train. Mostly likely this is a loaded train headed to the grain terminal in Seattle. While I was filming and facing south, I heard the distinctive thrum of a two-stroke diesel behind me. Seconds later, UP 7600 (AC45CCTE) came rocketing past me pulling a stack train. Trivia note: The trailing UP unit, is an interesting unit. At the height of the horsepower wars between GE and EMD in the '90s, GE was going to produce a 6,000hp engine to go in a loco called the AC6000CW. There were teething problems with the engine so GE built 106 locos for UP with the older 4400hp engine. The engines in these locos were to be swapped out for the 6000hp version once the bugs were worked out. This never happened so the locos stayed with the 4400hp engine. UP classifies these now as a AC4460CW. 4551 / 4837 C44-9W / C44-9W UP 7600 / 4214 / 6918 AC45CCTE / SD70M / AC4460CW