4 Union Pacific locomotives in series. Locomotive #’s: 7650 (C45ACCTE), 8835 (SD70AH), 4665 (SD70M) & 5704 (C45ACCTE).

These were parked in Flatonia TX.

If you’re like me and wondered how these locomotives were controlled when in series, I found a nice article explaining how’s it done and you can check it out here.