As far as Lakehurst NAS goes, I would not expect anything there. The siding that was built was purely to haul contaminated soil from the BOMARC site over on Rt 539. Originally, IT Group, who had the remediation contract, wanted to haul the spoils to the center of Lakehurst to be trans-loaded out. The town of Manchester objected to allowing the contractor from running his dump trucks loaded with potentially plutonium contaminated soil down Rt 70 (Lakehurst sits like the hole in a donut with Manchester relatively surrounding it) for fear of a possible accident. The whole issue was eliminated when the Navy permitted the trucks to travel via dirt road through the center of the NAS to reach the siding, which had been extended from the other side of S.Hope Chapel Rd/Cnty Rt 547 to just inside the Contractor gate on NAS property.
Once the dig and haul was completed (around 2000-2001?), as far as I recall, there was a one time minor use of the siding for storing a Comet I car and then nothing since. The original tracks on Lakehurst used to enter the property at a similar point in the fence and then paralleled northwards along Cnty 547 just within the fence ( you can just make out the berm that the tracks originally were laid on in the trees). It had a switch which allowed one spur to permit a train to approach Hangar 1 (passenger pick up in the 1930's for zeppelin traffic?) and the other part of the tracks continued North and then turned inwards to the Naval facility and ran to their supply buildings.
Theoretically, they could rebuild tracks to make them useful for freight purposes.
I would think it would be more useful to rebuild the rails from south of Ft Dix through Pemberton, back through the post, past the old warehouses (are the warehouses still standing?) and over to McGuire AFB. Many years ago, McGuire used to receive coal and jet fuel before they built the pipeline. Those tracks could better support more of the Mega Base infrastructure. I think the unused tracks laid there until just after the first Gulf War and then were torn up. The old Union Transportation ROW (from the north side) is history and would near impossible to restore since they ripped up the Camden & Amboy through Hightstown.