"Clinchfield SD45 3632" (Seaboard Coast Line #2024) had been getting work done all day with the Southern Appalachia Railway Museum crew. Being practically dormant for at least a year, it sat in the back of the East Tennessee Technology Park complex for pretty much the entire day getting a fuel injector replaced and various other tuneups on its EMD 645 engine.
As the sun was setting, they fired it up and got it up and running in one go. They gave a good few blows of the RS5T and coupled up with Clinchfield F3A 800 before running both locomotives moved back to the main office area of the SARM.