I was passing through Lordsburg New Mexico a few nights ago where the UP interchanges with the Arizona Eastern RR for it’s run up to the mines in Clifton and Morenci AZ, I saw a locomotive parked on the AE branch that was painted in Rio Grande colors and lettering but was unmistakably a GE B40-8, both myself and my engineer identified it as such, as far as I know the Rio Grande never owned these locomotives, anybody know the answer to this???