It only appears for roughly 12 seconds, rolling inbound to Chicago from Winnetka. It’s quickly forgotten by the next shot, a masterpiece in itself. “I’m a criminal”, says Kevin as he stares glumly down at the toothbrush he had just stolen from a shop.
It appears to be METX #149, a unit from the highly-successful F40PH series that was manufactured by Caterpillar-owned Electro Motive Diesel (EMD). According to Wikipedia, this locomotive was built between 1977 and 1989.
Somewhere between 2008 and 2012, #149 was rebuilt to newer specifications. As you can see, the external differences are minor, if not imperceptible.
Back in 2019, I used to commute for work to/from the city via the Union Pacific Northwest (UP-NW) line. During my morning commute on February 18 I snapped these photos of #149 heading inbound at 08:10 AM.