Three units push on the rear of a southbound Union Pacific coal train in Heavener, OK late in the day on June 6, 2022. Having attempted to - but failed at - catching the KCS business train one last time for the day, I was heading out of Heavener on my way back home when I spotted this rather special lashup just getting under way, featuring both a BNSF SD70MACe and a Ferromex unit.