Norfolk Southern has a job listed. They are very vague about the description of the job. 

Hi,

Can someone explain the actual use of a steam loco, equipped with a booster engine (typically in the trailing truck or in the lead tender truck)? Were there separate controls for the booster? When was the booster engaged? Did the associated driven wheels often slip or drag relative to the drivers? Was the booster cut out when not needed? When/if cut out were the booster wheels free rolling?

If you have a reference dealing with booster operation or you know the answers, both would be appreciated.

I've seen some cuts of cars parked along short line railroad sidings and even main lines for weeks or months without being moved, and I'm assuming (yeah) that these cars are being stored for a fee. None have reporting marks for the road they are stored on. I've also seen some that were there for weeks and then one day they were gone.

Several MRH-ers have operated a variety of diesel locomotives as can be seen from these prototype threads. Some are still doing so and some have even run old iron horses.

Of those you've operated which ones come to mind as your preferred (or disliked) ride?

What engine do you like for over the road? Switching duties?

What qualities make for the one you like and/or the one you don't care for as much?

Second category of "I know an engineer and he once remarked..." included.