Thanks to the derailment of their new SD70ACe's, the Arkansas & Missouri has been forced to go retro and run as an all-ALCO property again. A&M C420 #54 turns 50 next year, having been built for the Lehigh & Hudson River in 1965. For nearly 50 years old, the old ALCO looks awfully good as it blows through Butterfield, MO.