It used to be... Back when Grumman was a major industrial presence on Long Island.

The U.S. Naval Weapons Plant in Calverton (just west of Riverhead) was where Grumman built all of the U.S. Navy's F-14 Tomcat fighter jets (of Top Gun fame) and A-6 Intruder attack planes. It was served by a spur off the main line that goes to Greenpoint so that industrial equipment, materials and parts could be moved to the plant by rail.

After Grumman pulled up stakes, there isn't much heavy industry left in eastern Suffolk unfortunately.