A move over the Worcester Main line would have required, a CSX pilot, for the back up move to CP 45, a P&W Pilot for the move to Barber, from CP 45, if a crew that was qualified is not available then either a pilot or a crew to move the train to Ayer, the a move to Boston, and then if the trainsets where not available then a required move to Beacon park over the Junction, and then reverse move all train sets. never mind the need to factor in the track availability to move everything in a timely manner, over the P&W , and Pan am Worcester main line in both directions. this make the G&U move a no brainer.