KWF, Q-294 runs all the way to Ayer and return as a regular move. (Based out of West Springfield). The CSX crews on the other trains to and from Ayer (i.e Q-426 & Q-427) usually only go as far as Burncoat St.
PharmerPhil, I've beenhearing that rumor too, supposedly it is an NS van rain which will operate on CSX from Buffalo to Selkirk to Ayer and be passed-on to the Guilford crews to take to Portland.