I remember a CSX freight train coming through Gaithersburg, MD many years ago, probably circa 1999/2000 time frame.
First flat car behind the engines had a center cab diesel switcher on it, perhaps a 44 ton switcher or similar. I seem to remember it being green, maybe a military locomotive. Directly behind that switcher on the flatcar, there were several airplane fuselages. Never saw anything like that come through here again.